Interesting?

This YouTube video seems to be creating an uproar. The general feeling being that is one of abuse. My thoughts and feelings - nice, nope, but abuse? I'd certainly love to know what he was looking for from the horse. Clearly the horse wasn't giving him the reaction he wanted. What don't we know? Or, is this (rough training) par for the course? Not being a reiner I can't really comment but am deeply curious what everyone else is thinking. The video certainly has sparked my curiosity. Was the trainers reaction to the video extreme in this day of media? Was the trainer's methods extreme, or normal? What do you think? Is the video defamatory? Or does it speak for itself?