Misconduct at any hearing before the Board or the executive director is grounds for summary exclusion from the hearing by the presiding officer. If the misconduct is of an aggravated nature and is engaged in by a representative of a party, it may be cause for suspension by the Board, after due notice and hearing, from further practice before the Board. Absent constitutional, statutory or other privilege, the refusal of a witness to answer any question may be grounds for striking all testimony given by that witness on related matters.
12-180 C.M.R. ch. 12, § 24