I had the exact same thing happen a few days ago. I tried getting it out with all sorts of tools but I finally just grabbed the power drill and drilled right through the tapered bolt head so that only the theraded shaft was left and the cleat came off. I then took a tiny screw driver and unscrewed the bolt shaft by carefully jamming the screwdriver into the side of the sharp burred end and moving it laterally until it backed out enough to get some pliers on. I threw on some new cleats and bolts and now its good as new.