The only logic behind filming would be that it was a trial run.
ie his handlers gave him bogus explosives and had agents tail him to document the process!?! I wouldn't doubt that. Will air security start checking inside the seams of passenger's underwear now? I doubt it so that aspect of the operation is still workable.
Yes.
So we have at least three conspirators on the plane and another helping them to board.
And its a trial run. Weird.
The other guy with a bomb arrested after deplaning. Why didn't he just set his off aboard the plane?