Any contract made in violation of Section 2.60.010 may be avoided at the instance of any party except the officer interested in the contract. No such contract may be avoided because of the interest of an officer or employee therein unless such contract is made in the official capacity of such officer or employee, or by a board or body of which he is a member. (2630.2 -- Ord. 890 § 1 (part), 1957).