Ill. Admin. Code tit. 20, § 2504.80
a) The Director, Deputy Director, or Chief Administrative Officer shall remand the decision to the Adjustment Committee for new proceedings if the proceedings are found to be defective due to:
b) New or additional proceedings may be ordered in other circumstances, as determined by the Director, Deputy Director, or Chief Administrative Officer.
c) The Director, Deputy Director, or Chief Administrative Officer may remand the decision to the Adjustment Committee for additional documentation, correction, or clarification of the Adjustment Committee summary, including the statement of reasons for excluding witnesses, the basis for the finding of guilt and imposition of sanctions, statement of reasons for deeming sources to be confidential, or the failure to specify reasons for finding a confidential source to be reliable.