This аppeal requires that we ponder the denial of appellant’s motion to withdraw his guilty plea to certain federal drug and tax offenses. Because a weighing of the relevant factors virtually compels the result reached below, we affirm.
I. BACKGROUND
On July 12, 1991, defendant-appellant Clifford A. Doyle agreed to plead guilty to certain narcotics and income tax offenses. See 21 U.S.C. §§ 841(a)(1), 841(b)(1)(B) (1988); 26 U.S.C. §§ 7201, 7206(1) (1988). In the written plea agreement, appellant promised to cooperate with the government in exchange for the assurance that the prosecutor would herald appellant’s assistanсe. According to its terms the bargain contained “no further or other agreements, either express or implied.”
On September 9, 1991, the district judge conducted a hearing under the aegis of Fed.R.Crim.P. 11, ascertained a factual basis for the plea, and elicited Doyle’s understanding of the charges against him, the maximum sentence he faced, the rights he relinquished, and like matters. 1 Upon determining Doyle’s tender to be knowing and voluntary, the court accepted the guilty plea.
At the hearing’s end, the government filed a motion to seal all records in the case. No objection appearing, the mоtion was granted. But, as Homer had prophesied many centuries before, there was room for a slip ’twixt the cup and the lip. The clerk of court neglected properly to record and implement the sealing order. Two days later, the press learned of Doyle’s plea and a sрate of publicity ensued.
Sentencing proved an unusually protracted affair. The initial sentencing hearing began on February 7,1992. It ended when the district judge granted appellant time to respond to evidence of attempted flight. At adjournment, the prosecutor called the judge’s attention tо the clerk’s bevue, reporting that only the plea agreement itself had been impounded and that, as a result, publicity about the case’s status had jeopardized the identity of a confidential informant. Although the toothpaste was out of the tube, the prosecution nevertheless renewеd the motion to seal. The court again granted the motion. Appellant stood mute.
The proceedings resumed nearly two months later (April 2, 1992). The judge apprised Doyle’s counsel of his inclination to mete out consecutive prison sentences totalling fourteen years and one month. Eventually, however, the judge recessed the hearing without actually imposing sentence so that a question concerning the possibility of parole could be clarified.
The third sentencing hearing took place on April 6. The judge settled the parole issue at a chambers conferenсe, informing the lawyers that “any sentence I hand down will be with the contemplation that [Doyle] may end up having to serve that entire [sentence].” Appellant’s counsel inquired whether the judge’s thinking anent length of sentence had modulated, but the judge declined comment.
When the proceedings shifted into оpen court, appellant moved to withdraw his guilty plea. He argued that the media attention surrounding the case had endangered his life and stymied complete cooperation, thereby depriving him of the full benefit of the bargain commemorated in his plea agreement. 2 The district court determined, in substance, that the request to *594 retract derived from appellant’s displeasure with the forecasted sentence rather than from any legally cognizable reason and, therefore, denied the motion. Following imposition of sentence, Doyle appealed.
II. ANALYSIS
We stаrt with an overview of the legal landscape and then proceed to survey the precise terrain on which this appeal is constructed.
A
A defendant may withdraw a guilty plea prior to sentencing only upon showing a fair and just reason for the request.
See United States v. Pellerito,
B
Having limned the salient factors in the decisional calculus, we examine the lower court’s findings on each.
1.
The Proffered Reason.
A defendant may not renounce his guilty plea without advancing a plausible reason for so doing.
See United States v. Tilley,
For one thing, Dolye’s professed expectations were unwarranted. The plea agreement contained no promise on the government’s part either to seal the proceedings or to take any other steps to facilitate the defendant’s cooperation. We have repeatedly refused to infer the existence of promises not expressly articulated in, or necessarily implied by, plea agreements,
3
see, e.g., United States v. Atwood,
For another thing, the circumstances of the secrecy order render appellant’s professed reliance on it wholly gratuitous. The government moved to seal after the district cоurt accepted the guilty plea, stating in its written motion that it wanted to “protect the integrity of ongoing criminal investigations.” We simply do not see how imperfect compliance with an order mentioned for the first time after appellant’s plea had been accepted, and reрresented to the court chiefly as a vehicle to serve the government’s (not the defendant’s) inter *595 ests, could conceivably constitute a “fair and just” reason for retraction. This is especially so, we suggest, in view of appellant’s grudging admission that any prose-cutorial assurances abоut keeping his case under wraps came only after the court allowed his change of plea.
Thirdly, appellant’s argument depends on a profoundly flawed premise. He says his ability to cooperate was hampered by unforeseen events, specifically, the clerk’s blunder. Yet, in any given case a host of external conditions may impede an accused’s cooperation. In the last analysis, criminal defendants occupy no special refuge from the vagaries of an uncertain world.
Cf. Tilley,
2.
Timing.
Because the timing of a defendant’s attempted plea withdrawal is highly probative of motive, close scrutiny of the chronology is important in adjudicating whether retraction is fair and just. While an immediate change of heart may well lend considerable force to a plea withdrawal request, a long interval between the plea and the request often weakens any claim that the plea was entered in confusion or under false pretenses.
See United States v. Daniels,
As we have said, appellant’s proffered reason for seeking to withdraw his plea is that the plea agreement was founded on the mistaken assumption that his opportunity to cooperate would be protected. The chronology of events inexorably implies that this “reason” was no more than a contrived excuse to escape the district court’s forecasted sentеnce. Appellant learned of the leak two days after the Rule 11 hearing. He testified that “every newspaper, radio station, and TV station within 50 miles” promptly appeared on his doorstep, making “cooperation more than a little difficult.” Nonetheless, he did not seek to withdraw his plea for nearly seven months. That date, April 6, 1992, was (a) a mere four days after appellant discovered that the court was contemplating the imposition of a lengthy incarcerative sentence, and (b) a matter of minutes after defense counsel’s failed attempt to elicit a new sentencing prognosis from the judge.
On this record, appellant’s professed reason for moving to withdraw his plea smacks of post-hoc rationalization. One would have to believe in the Tooth Fairy to think it merely coincidental that, on the heels of the court’s divulgement of the likely sentence, the defendant suddenly realized that a seven-month-old error had destroyed the basis on which his plea agreement rested. We agree with the court below that appellant’s newfound desire to hazard a trial can only be attributed to a dawning awareness “of what the likely sentence would be.”
*596
3.
Legal Innocence.
Courts look more hospitably on a motion to withdraw a guilty plea when the motion is coupled with an assertion of innocence.
See Tilley,
4.
Voluntariness.
In assaying the merits of a motion to withdraw, an inquiring court must determine whether, in light of the defendant’s proffered reason and any newly disclosed facts, the plea may still be deemed voluntary and intelligent.
See United States v. Austin,
C.
We need go no further.
6
As the motion to seal formed no part of the plea agreement, there was never any breach. Furthermore, by communicating the extent of Doyle’s cooperation and his good intention to do even more, the government lived up to its end of the bargain. It had promised no more — and no more was exigible.
See Atwood,
Affirmed.
Notes
. During the Rule 11 colloquy, appellant again assured the court that no promises apart from those specified in the written agreement had influenced his change of plea.
. While appellant’s motion offered other reasons for withdrawing his plea, he argues none of them on appeal. We deem those arguments waived.
See United States v. Dietz,
. This familiar prеcept has particular applicability when, as in this case, the plea agreement itself specifically states that “there are no further or other agreements, either express or implied,” other than those explicitly set forth in the document.
. Appellant argues that his situation is exceptional inasmuch as the court's own mistake frustrated specific performance. This asseveration might have some force if the plea agreement contained a promise to impound records and the clerk’s miscue effectively deprived appellant of thе benefit of the promise. Here, however, for sentencing purposes, the court, by its own appraisal, took into account "the fact that [Doyle] did intend to and wanted to cooperate even though he was frustrated in doing so.” Where no apparent loss of benefit exists there is simрly no warrant for judicially rewriting plea agreements in an effort to ward off all contingencies harmful to one side.
. We need not linger over appellant's claim that, as early as February 7, 1992, the court should have probed anew the voluntariness and intelligence of his plea. To be sure, сourts will sometimes inquire
sua sponte
into alleged Rule 11 violations.
See, e.g., Daniels,
. Since all the critical integers in the decisional calculus counsel affirmance, we need not embark upon an analysis of possible prejudice to the government.
See Ramos,
