I believe it's real. You can tell by his demeanor. There's one other video of a student he trained..an older man. In the video the student is knocking something over from a distance.
Found it http://youtu.be/m-Ki2-VzUVs Hardly validating, but their demeanor feels casual and real to me.
Found it http://youtu.be/m-Ki2-VzUVs Hardly validating, but their demeanor feels casual and real to me.