This just in, part of an email from a woman whose horse knowledge and judgment I trust so completely that my horses will go to her if something ever happens to me:
*The thing about horses (and all too many people) is that the autonomic nervous system takes over under stress and intelligence has little to do with the resulting actions. Fight or flight is what our bodies dictate.
For a horse, and doubly so for a current or former race horse, flight is the preferred option. But if flight isn’t possible, then flight turns to fight.
From what I understand about this particular horse and owner, she’s probably created a situation where the horse is under pressure to do something - she’d call it dressage, he’d call it incomprehensible - and nothing he does relieves the pressure. If you’re a tormented animal who can’t dial 1-800-HORSE-ABUSE, the sensible thing to do is to kill the thing that’s got you trapped before it kills you.
I don’t know what particular methods of torture this woman has used, but…if someone put a metal bar in my mouth and tied it to my belt and hit me in the ribs when I stood still and yanked on my mouth when I moved and kept it up day after day, bang, yank, bang, yank, I think I would call the murder self defense.
And just suppose a horse in this sort of situation were “rescued” and retrained. He might eventually trust that when he starts moving the rib pressure will stop and when he stops moving the mouth pressure will stop. Maybe after enough time in good hands he’d relax and not be too troubled about human riders. Until someone reminds him of his past. Maybe it’s just two kicks when one was enough. No big deal for most horses, they learn to put up with that. But for this guy, it triggers a major flight or fight reaction. He tries to run to escape but the rider pulls on the reins. Again, no big deal for most horses, but this horse is probably going to hurt somebody very badly unless they’re very lucky.
A horse that hasn’t ever been put in a no-win situation will have the confidence to handle a rider’s mistakes. They’ll figure out some sort of response that makes the rider happy, or they’ll just wander into the center of the ring, or over to the nearest tree and stop. A beginner rider’s “noise” isn’t upsetting if they’re allowed to ignore it. A child isn’t a threat. *