its hard to tell some times if its a molt. (cause it looks just like them)
but the one thing that will let you know that its dead, and not a molt.
is there will be peace's of it, next to the shell that it was in.
molts are uselly just the body, attacted to a peace of rock. (so it stays as they pull outta it)
im sure its just a molt.
they are super hardy