Argus Skyhawk wrote:
I had heard that Roddenberry nixed the idea of making Saavik turn out to be the bad guy.
Roddenberry did hate the idea, but there wasn't a damned thing he could do about it. Nick Meyer told him to go pound sand. It was Alley's unwillingness to return that necessitated the change to Eris (later Valeris) rather than Roddenberry's ire.
Meyer writes about this in his autobiography. He says, in retrospect, he treated Roddenberry badly and could have handled the situation more diplomatically