He actually freaks. I can not clip him because he freaks out at the sound of the clippers. Unfortunately, there is no quick fix for any of these problems. Having him stand still when mounting is a very basic lesson when starting to back a horse along with saddling for the first time. If the foundation wasn't taught then, it takes a lot longer.
People always seem to be in a hurry to do things with horses.
Disciplining him with a whip for something he doesn't truly understand, only make matters worse. When retraining a horse with this problem, have someone at his head as a safety line, so to speak. Have him stand quietly and time it with a watch. If you can get 30 seconds without him moving a foot - good. Walk him a little and repeat.