Retraining Thoroughbreds

What are your opinions on this guy's methods? He is my favorite so far. He goes into getting the basics down with the retraining, and not over-correcting the horse. Over-correcting just puts too much pressure on the horse, and makes him more difficult to train in the long run. Is there any other trainer for this specific thing that you prefer?

Overall I like his methods. He's being very consistent and making sure the horse is comfortable with A before moving onto B. He stays calm when the horse becomes tense and lets the horse come back to him. I would like to see his hands further up the neck and higher to give the horse a straighter line of connection. Right now they are a bit low and creating pressure that is borderline uncomfortable for the horse.