1. would be vice grips.
2. you might be able to use a phillips head screw driver if there's one.
3. i'd use a chisel and hammer and start making it turn.
4. and if not, break the head off and scavenge the rest later.
hmm, will consider all. thanks for thought. but if i break off the head will i be able to get the rest of it out? cuz im thinkin that might be the only way on the stripped one.