Wow...
You know what's worse than the absurdity of that demonstration? It's that none of us are, really, all that surprised. There are "snake oil salesmen" in every industry including the martial arts world.
I feel two ways about it: sad for those taken in by that sham, and truly thankful for the solid school I'm in.
p.s. she's sort of cute not that it makes it ok ... anyway...
Doctors: "Mr. Simpson, this procedure MAY increase your brain power ... OR it may KILL you!"
Homer: "Increase my killing power, eh? I'll do it!"