Seen it.

Been there, done that, made a cup of tea and promptly forgot about it.

The documentary maker is pathetic and so wants to believe it all that he is completely unable to remain objective.

At one point he has a mind power trick done on him and is terrified by the power of the guy demonstrating it.

In fact, what you see is the application of a run of the mill Martial arts principle involving pushing into someones larynx with the tip of your fingers as a result of which they will fly backwards.

This is combined with the power of the presenters fear of and willingness to believe in mystical mumbo jumbo.

I suspect that the rational root of his fear came from standing in front of total nutter in the shape of his military interviewee.

You'll see.

Have fun.