Parties, their authorized representatives, witnesses, and other persons present at an Office proceeding shall conduct themselves in a manner consistent with the standards of decorum commonly observed in a court. Disrespectful, disorderly, disruptive, contemptuous, vulgar, or violent conduct or language, refusal to comply with directions, or continued use of dilatory tactics constitutes grounds for immediate exclusion from an Office proceeding. A person who presents a threat to safety or who is disrupting Office operations or an Office proceeding may be removed from the: Office proceeding; Office facility; or Premises.