Bad Hermit???

[dcw1sfu]

So I found this hermit in my tank which I thought at one point was a red scarlet. Now he is looking a rusty brown so either lost his color or not a red scarlet. Who knows. Anyways I put him in an isolation box with some frags of a coral to see what he does and caught him holding onto one today and the skin has peeled from the piece (could be cause its siting in water with no flow). Bad hermit?