Minnesota Statutes Judiciary (Ch. 480-494) § 481.09. Proof of authority

A court, upon motion and hearing, and when reasonable grounds are shown, may require any attorney to prove the attorney's authority to appear and, until such proof is made, may stay all proceedings by the attorney on behalf of the party the attorney assumes to represent. At any stage of the proceedings the court may relieve a party from the consequences of the unauthorized acts of an attorney and, upon motion, may summarily compel such attorney to repair any injury resulting therefrom.