We are asking for trouble when members of the team try to skirt around us and work behind the scenes. Then you have the promotions department and director I call the "doubting Thomas". They think everything you plan will fail and often suggest their disdain to the GM or OM. Then the house of cards falls in. Simple objective: Have promotion meetings every week where the PD or MM leads the meetings. Agree and disagree in the meting, but do not change the plan once it's agreed upon.
Work together with synergy on the same team, for the same goal. If someone, whether a promotions director, assistant program director or air talent begins interfering with a plan - Nip it in the bud as Barney Fife would say.