I came home after a day's excursion to several LFSs to discover what appears to be a turbo snail sans shell.

I'm thinking perhaps this is not a Good Thing. They all had their shells on when I left! Is this one of those things snails do when we're not watching??? if so, this particular reefkeeper is Not Amused.
Seriously though, we do have a fairly large hermit crab which has taken quite a liking to evicting turbos and taking up residence in their shells. In the past, however, he's eaten the previous occupant. This time, I just see the poor snail (?) wandering about without his shell. It was semi-dark in there, so I couldn't tell if the suspected perpetrator has a new shell or not. I *bought* a very nice pair of shells in a slightly larger size which have been studiously ignored ... and now there's this naked snail.
With hermit and emerald crabs in the tank, how likely is it that this poor thing will survive? And if that dang hermit crab is now ripping out snails just for the sheer joy of it, would any of you care to start a hermit-rescue operation before this one becomes sushi or a pancake?
=^..^= ... the problem with people these days is that they've forgotten we're really just animals.