Thanks everyone for the tips. I actually took a pair of needle nose pliers and popped it.....but can't really tell if I helped or crushed it. It took a bit of pressure to pop so I have a feeling it may very NOT have popped on its own. I stuck it in an RR and watered it. Some water HAD gotten insde the shell.....the inside was soft....but.....well we shall see. The biting thing may well have worked better than the pliers in thinking about it....thanks Treetops.

I'll try the nail file thing next time before I add any water......