I had the same problem my friend. I found that the easiest way to remove the bolts, unfortunately, is to grind the heads off of them from above. It does take some time, and I would suggest some ear and eye protection, but I think it took me about an hour to do. This is the easiest way. I just did this about two days ago. I grinded the most of the head down and then took a cold chisel and chipped the rest of the head off. Then I used a 3 pound hammer and a pipe to pound the bolt down through the hole. The damage incurred to the bed depends upon how patient you are at grinding the head off. If you grind the whole thing off, it would be best.