SnakeDoctor
Super Freak
Which makes absolutely no sense, contributes nothing to the story.
It contributed the Prime Directive controversy to the story, showed that there remained conflict between Spock and Kirk regarding rule-following ... and established that Kirk was willing to break the rules to save the life of a friend. Seems that contributed quite a bit to the rest of the movie.
Plot contrivances for effect are well within the Trek tradition.
SnakeDoc