Wow...

...this happened at a schooling show. I'm assuming the idiot on the ground is the rider's trainer, interrupting her round to "assist."

And surprise surprise, the horse gets pissed off and the rider is the victim.

The horse was behaving fine until the idiot on the ground interfered - the first run out was a missed jump, not a disobedience, caused by the rider muffing the turn (which I've done myself, you don't blame the horse, you just go back and do it right next time).