Seeing him handle an unhandled horse live would be really interesting... Although I hope it was not one of those "how to break a horse in 30 minutes" things. Those I totally despise.
Games are generally meant to mimic the movements horses use in herd environment to move each other around and establish hierarchy. And I have seen horses use all of them, it is very interesting. Well, maybe except covering each other with a tarp, they don't do that - at least, not when I'm watching.
However, I tend to see that his way of handling horses is very dominant, a tell-demand attitude, whereas I prefer to learn from the leading mare, not the dominant stallion of the herd. Horses seem to be calmer and more willing with this way of handling them, especially, if the horses are either passive, either dominant themselves. I used to be dominant only with Snickers, and, as he is naturally dominant himself, our communication often excalated to fights. I do not want that anymore. Also, I've seen over-parellized horses, who begin to be afraid to express their character and opinion. That is, in cases when the handler just executes the physical part of the games and thinks only of establishing respect, but hasn't got a clue about reading how the horse really feels about that.
I have come a long way, to surrender my shadow to the shadow of my horse.