Actually I just looked again and I was able to lift mine up enough to get a nice look under it. Looks like there is a little light under there that is shining through the hole and around the key a little. You could take a piece of black electrical tape and put it on the end of a paperclip, very carefully, slowly put it down ontop of the light. After you got it alligned with the paperclip, come back with a knife or a small screwdriver and make sure that it is on there tight enough. There might be a way to get this key off. I was looking and there seems to be some sort of clip in there that looks like it could be slid out of place with a paperclip or something. Maybe try those methods. Let me know how you come out.
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"Fix it 'til it Breaks."

Jacob - EiC & Director of Technology
Mac Pro Quad 2.66 - 4GB RAM
160 GB SATA RAID 1 - 650 GB Storage
Quad 19" Widescreen LCDs
Accessorized to the Hilt