The Borough Council may reverse, remand or affirm, with or without conditions, the final decision of the Planning Board acting as the Zoning Board of Adjustment being appealed. The affirmative vote of four members of the Borough Council shall be necessary to reverse, remand, or impose or remove conditions upon the aforesaid final decision. In the event that an affirmative vote of four members of the Borough Council is not obtained, the aforesaid final decision shall be deemed affirmed without change.