[kingbee]

As an aside, that happened to me. Had some crunching and banging around, then BAM! Totally locked up the engine. There was absolutely no way to free the engine, so ended up pulling it. Found the screw wedged between the flywheel housing and the ring gear. Interestingly, it was not my bolt, but a previous owner's, as both my bolts were still in place. It was in there for thousands of miles before it decided to ruin my day.