Sounds great, im glad to hear that hes doing fine. He may have had an impaction in his intestines. That was probably the twitch. Continue with the supplementation though...YOu should probably put him in some sort of buck with about one ince (so his anus is covered in it) of warm water and let him chill there for 20 minutes, do this every other day if you can (but usually twice a week is fine). This helps him clean his system a bit, and gets him more hydrated.