Safety is also measured by what is around the horse. Who/what will the horse hurt besides himself when he freaks out and runs away? No quick release, no break-outs, no leather halters, no easy-free halters. Nylon halter with a neck strap. Tie him and tie him well. Tie him on a 6"x6" post that is sunk 4 feet into the ground away from the concrete. Not on a fence post, but possibly there might be part of the barn structure outside that will be strong enough. If nothing breaks, the horse won't either. He'll test it and figure it out pretty quickly. It not, he may have issues that can't be "fixed." Horses are really very good at figuring out what hurts and what doesn't, long before they get hurt. (If left to their own devices, that is.)
However, for safety in the trailer, ESPECIALLY with this horse, just don't tie him. Simple. Make sure the transporter is well aware of the issue.
Last edited by NorthernMama; 07-27-2010 at 10:57 PM.