I've seen this banded about and used alot
Frankly it's a poor piece of work.
I'd advice anyone to read his books and make their own mind up!
So he's not the positive trainer that some people seem to think is a big deal... Problematic dogs need different kinds for handling and He is fluid in that handling. He uses what ever method he thinks is best suited for the dog. He DOES NOT apply aggressive and fear tactics to dogs... He's does everything but. Only to an uneducated eye would this conclusion be made. Flooding workis and moves the right dog on quickly aversion theraphy also moves dogs on fast.
IMO short term discomfort for long term balance is exceptable.
He gets to the problem asap and deals with it there and then... Maybe the so called positive trainers dislike him because he can and does get results fast. So theres no long drawn out massively expensive charges. He's the man who can help everyone understand there dogs. peopel need to stop with the negative Vibes man... Peace and loves people..
And oooohhhh he hasnt any "formal " quilifications.... AND Knowledge is not just attained via schools and uni. People who break the mould don't learn that from others they pave there own path through blood and sweat.
Did the first man who told his dog to sit have to have a degree to be able to do so? NO. Give the man a break.