BECAUSE I HAVE BEEN THROUGH EVERY POSSIBLE SOLUTION THAT I CAN THINK OF AND NONE OF THEM MAKE SENSE IN THE CONTEXT OF THE SHOW

I mean, I know Molly had something to do with it, and probably Mycroft, as well, but I can’t get around the fact that John was watching the entire time and thus would have seen a body-switch or something like that. The only two times something could have happened would be when Sherlock says “Keep your eyes fixed on me”, because then something could be happening down below, or when John gets knocked over by the bicyclist (which was totally part of the plan, by the way). And it couldn’t have actually been Sherlock with all the blood and stuff because when he was at the graveyard, there were no scratches at all on his face. 

This is really frustrating.