Check out the pics. I need help on removing it. You can see where the bridge collapsed and where my frined dented the body like hell from trying to remove the screw... Unsucessfully.
Needle-nose pliers maybe? Or Vice-Grips.
if that doesnt work take a socket that is a bit smaller than the bolt/screw and hammer it on, this is of course assuming that u r not going to rreuse it
Vice grips should do it.