No person shall, directly or indirectly, communicate in any way with any member of any board, agency, authority or commission of the City as to any adjudicative matter which is, or which may reasonably be, expected to be pending before such board, agency, authority or commission for the purpose of influencing said member of such board, agency, authority or commission, unless a full disclosure of such communication is simultaneously made available to the other party or parties in interest with respect to such matter. This shall not apply to any communication by a member of Council or by any other City officer or employee in the performance of his official duties.