The Council shall be the judge of the qualifications of its own members as defined in Article II, Section 2. The Council shall also be the judge of the conduct of its own members. It may expel or remove any member for gross misconduct or malfeasance or nonfeasance in or disqualification for office, or for conviction of a crime including moral turpitude while in office, or upon conviction for violation of the oath of office, or persistent failure to abide by the rules of Council, or absence without justifiable excuse from four (4) consecutive regular meetings of Council; provided, however, that such expulsion or removal shall be upon concurrence of five (5) or more members of Council and after public hearing upon the charge or charges brought; and provided, further that the accused member shall have been notified in writing of any charge or charges at least fifteen (15) days in advance of such public hearing, and provided, further, that the member of Council shall have been given an opportunity to be heard, present evidence, and examine witnesses appearing in support of such charge or charges. The decision of Council in expelling or removing a member of Council after compliance with this section shall be final and thereupon the office of any such removed or expelled member of Council shall be vacant.