I am actually unsure. Going back to menu and loading back in might help, as it usually has to reload props and stuff, which may or may not get it unstuck. If that doesn't help, I think there's a way to regen props and stuff in the settings, but I can't remember for sure.
If grabbing and pulling the hell out of it doesn't work, best bet is to reload the save. I got my boy Kerfur stuck under the base and was able to wrangle him out from under it with a bit of time.
