This was a really nasty horse. I don't normally say that because most bad behavior is mismanagement somewhere down the line but he really, really tried to hurt you, and not just a little hurt, either. If you were at his shoulder, he would turn himself inside out reaching up to get you. He's do it on the walk, too. If you were too far forward, he would rear to strike you. Too far back and he'd twist up underneath himself to get you. I've worked with a lot of young racehorses and they can be full of themselves--too young, too fit and too confined to be the sensible older horses they grow up to become. This one was different. He was out to kill you. I've never met another horse like that, and I've been around a lot of horses including breeding stallions.
I was at a seminar some years ago and the trainer was talking about a horse which goes up and over backward. The remark given was that you should put antlers on him and send him out during deer season... ;-)