Paul__B:
Just use the smallest dobs on the corners to do the job. You may want to get it off again for service/ modifications.By the way, flooding with meths and occluding with a piece of plastic wrap for an hour or so, does soften the adhesion of Hot Melt to surfaces.
Yep. I use it regularly for woodworking, even for attaching glue blocks to pieces for turning on the lathe.
Metho doesn't actually soften the hot melt glue as such, but it sort of wicks in between the glue and the surface that it's on. And even if there's a lot of the glue, metho works to remove it. (When gluing for the lathe, I use heaps of glue, so that it covers most of the surface.)
Just flood as you say, then apply even pressure while keeping the edges of the glue flooded. I've never had it fail to let go. (That pressure is important. It speeds the process, and as the glue lets go the metho wicks further and further underneath. I usually manage to get it to let go in a couple of minutes.)