Yes, I would cut the grain as well, but for what itís worth I wouldnít stall him. He just sounds like a super active and clumsy horse to me as well. My main horse is extremely active as well. Luckily not clumsy. I can only imagine how he would chew on wood if he didnít have other horses to chew on and bother and it happened to be available. He is constantly busy and does not have an ulcer. He does have some vices from being a baby kept alone before I owned him. That type of animal, the one who must always be stimulated, will find a way to get into trouble if left with too little to do for too long.
Am I not your own donkey, which you have always ridden, to this day? Have I been in the habit of doing this to you? - Balaamís Donkey