Emblem removal problem

[rgriffin]

I had my car repainted after vandals and a deer screwed it up last year.
Front hood emblem was replaced with a new one from Porsche. Emblem fell off. Now I see two silver posts and that's it. Took it back to body shop, Porsche agreed to replace emblem for free since it appears to have corroded off. Now I can't figure out how to get remnants of emblem off! When I try to unscrew from under hood, the silver posts visible from top just turn. I can't get a hold of them since they are pretty flush with hood. Tried hot gluing and supergluing various things to posts, but it never holds well enough. Any ideas??