Yep - see my 1st comment. Tried that :-S
"Hi NCArcher,
Thanks for your fast reply. I've tried this but it doesn't screw out no matter how hard I try - the thing won't budge. I've also tried the obvious putting a screwdriver into the hole and then using a hammer to bang it out but it still doesn't budge. I'm wondering if there is a bolt on the other side of it inside the wood? I know that doesn't make much sense but it just won't come out."