(a) All persons appearing in proceedings under this part shall act with integrity and in an ethical manner.

(b) The ALJ may exclude parties or their representatives for refusal to comply with directions, continued use of dilatory tactics, refusal to adhere to reasonable standards of orderly and ethical conduct, failure to act in good faith, or violations of the prohibitions against ex parte communications. An attorney who is suspended or barred from participation may appeal to another ALJ designated by the Chief Administrative Law Judge. The proceeding will not be delayed or suspended pending disposition on the appeal, except that the ALJ shall suspend the proceeding for a reasonable time to enable the party to obtain another attorney.