Same thing happened to me, my old horse Vodka was very touchy with flies and had been treated roughly in the past, the result being that is he got scared he would get aggressive. With us, we treated him gentle and he would do anything for you, but our farrier (that we had sued for about 4 years) was a very agressive person, not hitting but growling if they twitched. Vodka was twitching his belly at flies so the farrier dug him in the ribs, well Vodka shot forward and kicked the farrier in the leg. We switched farriers to a more gentle man, and never had a problem. You need to find farrier who's personality suits the horse, we never had problems with the first farrier for any of our other horses, him and Vodka just didn't match. Personally I don't find it reasonable for a horse to stand stock still without fidgeting while he is trying to balance on three legs! Dumas, I don't think that it was a problem with the horse having it's feet handled, from how I interpret it the horse was simply fidgeting. I do agree that any horse must be able to have it's feet handled.