I can totally relate! My boy was tormented all the time at our last barn..part of the problem was that the pasture was too small for 4 horses, and even tho the BO fed in at least 5 piles, the other horses just seemed to delight in chasing him away from them, away from the water, etc. While I knew they were just being horses, it still broke my heart. We moved to a new barn, my boys have a pasture to themselves and they get along great. I suspect my boy just was not good at picking up cues... the subtle " move!" signs that the others gave, until they took more drastic measures to 'move' him. ( he was the bottom of the totem pole at his previous owners too... he has always been the 'kick me' horse) I suspect he will be fine once you move him... no real suggestions.. but I feel for you!!