Yesterday when I came home from work I noticed the worm body of my feather duster extending out of its tube. I didn't think too much of it but as of this am the worm has completely left its shell and is in a different part of the tank. It still has its crown so I think that's a good sign, but should I be concerned? I did do some rock rearranging and moved him a few inches closed to the side of the tank with the powerhead. At first he was getting blasted by it so then I adjusted it so it didn't get direct flow. Could the move have cause the issue? Should I try to reinsert him into his tube?