Thanks for allowing me to assist you, I am the horse's servant and will do my best to help you with your horse. Any horse that has been in a starvation situationwill be anxious about feed. The use of a slow feeder net or other slow feeding system will help that situation. There is a device called a pasture pal for feeding pelleted feed, a pasture feeder for hay that are an alternative to slow feeder nets. If possible support his need for continual feed by allowing metered access to reduce his anxiety. As far as socializing, I suspect when he settles down about the feed availability, he will warm up to other horses as friends. Currently, if he is around others, they offer nothing more than competition for what he percieves as limited resources. Thus if the hay forage is continuously available, he will likely settle down emotionally and behave more like. Herd member. That being said, it is good he has other horses to see as it is a more normal setting for a horse. Good luck with this special needs horse!