That's not what you stated before. But regardless, currently Schiavo is the legal proxy for his wife. If the governor claims custody then I would assume that before he can take legal custody the court has to remove it from Schiavo and give it to the state. Only then can the tube be reinserted. I doubt that the court will agree.
Actually, DCF does not have to remove a guardian in order to take protective custody of Terri. DCF would have to petition a court at some point, but not in order to take protective action.