User blog comment:Oknight/Theory: Kaldur is the Mole/@comment-3465526-20111113131053

So my current (and final?) bet -- Kaldur was replaced by a clone during Infiltrator. (question: when? I assume it had to happen during the course of the episode since I expect they're going to go back and show us "a what really happened" during the reveal) The clone was "off his game" right afterwards until he got more used to being Kaldur. Then Kaldur fakes being knocked out during Bereft to force the team to abandon Superboy -- he is apparently immune to Miss Martian's telepathic power (is HE telepathic?) which is why he later wasn't overwhelmed by the simulation in Failsafe and sacrificed himself for the team (did HE cause the simulation to go wrong?). Sportsmaster's reveal was the critical clue because it makes no sense until you realize he said it for Red Arrow's benefit not for Kaldur's -- at that point it's clear Kaldur is the mole and Sportsmaster was removing all possible suspicion. Then Kaldur faked (somehow?) becoming Doctor Fate which is why he could take off the Fate helmet with no problem. Finally he makes a fake offer to step down as leader allowing Black Canary to "convince" him that he has to stay on.