He said that he was "superfluously attached" to Tarzan. Superfluous means extra, or not needed. He definitely didn't mean to say that he was associated with the show, but that they didn't really need him.

He was trying to say that he was connected to it, but it was a pretty distant relationship, because the show isn't happening for a really long time.
Silly, silly Adam. And you could tell, too, that he was all proud of himself for using a big word.
A work of art is an invitation to love.