I don't know Ronin. I mean, I can't comment on the guys fighting ability, but here's some of the things he's got on his webpage...
The UFC, what a stupid waste of time and energy! I would never teach anyone to use my methods in such barbaric tournaments, and anyone who would wish to, would not have the brain power necessary to learn my system anyway.
But his grappling is special and does work! Because, er... it's his grappling!
6/. Never use a lock or hold as your main fighting method.
Locks and holds do not work in a realistic fighting situation.... It is all right to use a lock to control an attacker once he has been disabled by using a point strike or some other striking disabling method. However, if you try to use a lock or hold against someone who is trying to harm you, then you will lose the confrontation.
Need I say more?
Because of my idea that everything that I teach must be useful, I have developed many of the wrestling techniques so that they do work in the street.