That theory has been thoroughly debunked.
For one thing, no one disputes that Scott was shot with the taser, and the police reports indicate that Scott attempted to gain control over the taser just before Slager shot him. So, when, exactly, did Scott have the time (and separation from Slager) to re-load the taser?
For another thing, had Slager been shot with the taser, why did he never say so? There are plenty of audio and video recordings of Slager after the shooting, and he never once said anything about Scott shooting him with the taser. Odd, no?
thanks