I had three acting similar. Two would not stick to rocks and float around and did not make it. Third one made it but looked horrible like awithiring anemone. Tried everything. He lost his little frills and my hermit would eat his dying frills. Started spot feeding him reef roids and he seems to be coming back around opening more and coloring up. I would not move him if he is attached to a rock. Just make sure your water is good and feed him lightly with some kind of plankton they seem to respond well for me.