This *is* a purification ritual, after all. Maybe the horse's next stop is the dog food factory, and this is just to make sure it is kosher or something? :angel:

Any time it leaves the stall...matter of fact the barn could burn down so it's not safe there either.
As for being traumatized, probably. I would be if a bunch of crazy religious zealots were leading me by the halter through bonfires. But that said, I'd prefer it to having my throat slit.
Keep in mind however the animals that were killed in the other IOtD were not tortured or killed for fun. It was the a religious ritual slaughter of animals for food.
I know you don't agree with killing animals or eating them but they do and their religion dictates how the animals be slaughtered.
That's a far cry from indiscriminately killing any critter available. ;)