Any city member of the Interjurisdictional Planning Commission may, after a public hearing before the city council, be removed by the mayor by and with the consent of a three-fourths vote of the council, for inefficiency, neglect of duty, malfeasance in office, or other good and sufficient cause. Vacancies occurring otherwise than through the expiration of a member's term shall be filled for the remainder of the unexpired term by the mayor, by and with the approval of a majority vote of all the members elected to the council.