Parties, authorized representatives, witnesses, and other participants in Commission proceedings shall conduct themselves with proper dignity, courtesy, civility, and respect for the Commission, the director, the examiner, and all other participants. Disorderly conduct will not be tolerated. A violator of this rule may be excluded from the proceeding by the examiner for such period as is just and may be subject to such other just, reasonable, and lawful disciplinary action as the Commission may prescribe.