I'm kidding, I won't cut Bud up. Except for this one problem, he's a sweetie. He's actually good for a few things, he can be lightly ridden, I use him for a companion horse if I have to haul one of the others to the vet and he's really good at knocking other horses egos down a peg or 2. I bought this really bad bully horse one time, he picked on all the other horses. I put him in the pasture with Bud and this SOB when after him. Bud kicked his ass in no uncertain terms. Bud never picks fights but he'll finish them.
Just a thought, you say the only time he's like this is when he hasnt eaten..........maybe he gets low sugars?