No person shall perform the duties of a fiduciary commissioner or special fiduciary commissioner in any matter wherein he will be passing upon his own account or acts; nor, where he will be called to pass upon any account or acts with reference to which he served as attorney or counselor; nor shall he be in any manner interested in the fees or emoluments of any fiduciary whose accounts or acts are before him for any action required by this chapter; nor shall he be surety on the bond of the fiduciary whose accounts are before him or agent of, or pecuniarily associated with another who may be such surety; nor shall he be qualified to act in or pass upon any matter before him in which, were he a judge of the circuit court and the matter were therein pending, he would for any reason be disqualified to serve. Any person who violates this section shall be guilty of a misdemeanor and, upon conviction thereof, shall for each and every violation, be fined not less than fifty nor more than $500 or imprisoned in the county jail for not more than six months, or punished by both fine and imprisonment at the discretion of the court; and upon such conviction his office shall in so facto become vacant.