User blog comment:DCFreak22/Miss Martian's Grey Area - Justice League Oblivious?/@comment-4803933-20120615024044

While I agree that the second theory is the most plausable, I would expect that, after having his mind taken over and controlled by the Light, Bruce would've taken precautions against letting himself be used like that again. Plus, now with both of them off world for who knows how many episodes, there's no way to confirm or deny this unless M'gann herself comes out and tells the audience she did it.

My guess is that it'll be yet another plothole to add to the "Justice League - including the World's Greatest Detective - never even considered the possibility of being sent into space during the missng sixteen hours despite the fact that it's been five years" one.