I have no problem with it since I couldn't buy Moriarty killing himself. There's no way to control events after he's dead. It is an idiotic plan. I had thought that actor was an impersonator for the real Moriarty, may still be a front for Moriarty, but that he'd really kill himself as part of his plan, no. The episode was OK, Mary turns out to have been working for Mr Smith? At least Remo Williams and Chun would have made it look like an accident.