No presiding officer shall preside over, and no member of the commission shall participate in making a decision in, a proceeding in which such officer or commissioner has a personal bias or interest with respect to the matter involved. Any party may submit a motion for recusal of a presiding officer or commissioner. Such motion shall be accompanied by an affidavit setting forth in detail the facts alleged to constitute grounds for disqualification. The motion shall be submitted to the individual whose recusal is sought, and a copy filed with the secretary.