Good thinking GoldRush! It's amazing what horses can hurt themselves on. We are getting the bolt sawn off, hopefully. The people that make the fencing these days, they don't bother trimming the hinge bolt end off anymore. We are getting hold of an electric metal cutter thingie so we can take it off. The fence next to the ring feeder has one string of barbed wire about half way down [its the only barbed wire fence in the field] so we covered it with hose piping and he still finds a way to injure himself! Typical pony.
I'll keep you all updated if there are any changes. Fingers crossed he'll keep healing the way he is.