I have a horse that when he is not getting his way will back up uncontrollably. I have tried kicking him forward, pulling his head around to circle, I tried spurs and I have tried a a crop. This horse is the alfa horse, and he wants control. I do not let him control anything when I am working with him, so he starts this backing. He knows exactly where he is backing. He will back into anything that he feels will make me dismount. When I try to circle him he will back at the same time. I have backed him up all over the pasture and he will threaten to rear. I then tied his head down. He has backed into an electric fence. I held on for I knew he would launch forward when it hit him. He did but it did not teach him a lesson, he then turned to back into a barbed wire fence. He will back into the barn and try to crush my leg on the barn door. He will back into trees. I am at a loss as to what to do with him. He does great on trails but at home he is awful with this backing. I have tried every training method I can think of. Has anyone got any suggestions as to how I can break this dangerous habit? Right now I am doing more ground work but he is fighting even this these days and will back when he gets temperamental. I have had him for 5 years and he was fine until recently. I suspected when I purchased him that the previous owner had a problem with him. The seller had been hurt when a horse fell back on him. But they swore it was another horse that had done it. I would love to have any advice or suggestions.