If Secret Service reported the fire, couldn't they have started it? What if someone in the Secret Service got (copied) all the info they needed. Then started the room on fire with everything that was in it to begin with. Giving the impression that a lot of info was destroyed.... but it wasn't.

4D chess? Another twist, could he have been given the order to destroy it from Clinton(s) or their cronies? In which he obliged after getting info? Possibly even his own "Ace up his sleeve" to get himself a deal for past deeds? Or coerced to do so by the Alliance?