The NBC Rock Center report on Boyd and Neville got me to thinking(always dangerous) about halters in the stalls. For some reason I cannot remember we have always removed our horses halters in the barn stalls. Some argue leave them on so you can quickly get your horses out in a fire. Is there any reason not to keep the halters on, other than chaffing, etc through constant use? Fortunately or unfortunately depending on how you look at it, our horses do not crib, so we don't have that expedient method of leading them available as Boyd did.
Once saw a horse who had evidently tried to scratch his head with a hind hoof and somehow the halter had slid between his hoof and the shoe in the back. When his owner came screaming for help his head had swollen (lots of pressure there) and there was no unbuckling the halter.
It was a job cutting the halter and trying not to cut the horse.
I don't let mine wear a halter in the stall.
You know why cowboys don't like Appaloosas?" - Answer: Because to train a horse, you have to be smarter than it is.
My childhood riding instructor had a friend whose horse broke its leg in a scenario similar to the one posted above. The halter was leather and fit properly, but for whatever reason didn't break. My horses do not wear halters when they are not being handled (or tied), period. I would not board at a barn that required it.
There are lots of things you can do to mitigate the risk of barn fire that DON'T put your horse at constant risk.
I dont leave halters on horses out in pasture or in a stall period its dangerous. I worked at a trail riding stable that left halters on hores it proved deadly. Horse got hung up and stangled it self. All my horses lead with a lead rope around neck.