Originally Posted by
cxwrench
You should be able to drill through the bolt pretty easily w/ a good bit, I don't understand why this is a problem. Hammer a Torx bit in there.
ETA: This didn't happen because you shifted while climbing, something wasn't adjusted correctly. People shift in all sorts of situations. And it looks like your photos are flipped backwards, what's up w/ that?
It should be obvious to the most casual viewer he said "flip side" on the photo. Nothing wrong with the photo. And it can happen while shifting while climbing.
We have had this same repair in our shop before from the same thing.