Ok, before I run to the bikeshop or hardware store with my tail between my legs, does anyone have a solution to this dilemma:

After not having touched my cleats for ages, I decided to finally replace them today. On the first shoe, screw one came out just fine. Screw two was a ***** and wouldn't come out. I kept torquing harder and harder and finally the opening to let the allen key in (what's that called... I'm sure it has a name!) just kind of stripped. Now I got nothing.

What can I do about this? Can the shop even do anything about this? (I called but no one answered )