A Commissioner disqualified under subsection (a) may disclose on the record the basis of the disqualification and may ask the parties to consider, out of the presence of the Commissioner, whether to waive disqualification. If, following disclosure of any basis for disqualification other than personal bias or prejudice concerning a party, the parties, without participation by the Commissioner, all agree in writing that the Commissioner should not be disqualified, and the Commissioner is then willing to participate, the Commissioner may participate in the proceeding. The agreement signed by all parties shall be made a part of the record of the proceeding.
Ill. Admin. Code tit. 56, § 5300.1340