When a colt gets pissed, it gets really pissed
, but it should recover in a couple of days. It is just stressed out, I would say for the amount of stress it is behaving normally. I would also guess that if you were to closely inspect the rocks immediately adjacent to the rock the colt was on before the move, you might find bits of colt on it. They will grow tremendously, including at the base. I would further guess that it's base was ripped a little in the move... hence the closing up. Make sure it has plenty of waterflow, when it is pissed it will slime like crazy...to the degree that it could smother itself.