Yeah, he wasn't even that heavily involved with TNG, let alone the movies. I think he was still technically "creative consultant", but that amounted to passing some script notes that didn't need to be acted on. It's always been said in the official record that it was Roddenberry's insistence that a much-loved character shouldn't be the traitor, but I don't know how much truth there was to that. It sounds plausible, given he was opposed to our heroes having conflicts, but I doubt it was the deciding factor for Nick Meyer.
Wasn't Kim Cattrall Meyer's original first choice for Saavik in TWOK?