I don't understand why you have to do what you did. Were you working on a rear disk brake bolt on the caliper? I had recently a cross-thread bolt inside the pin on the caliper of a Honda Accord (6th generation) preventing the bolt from being tigtened or taking out. What I did was cutting bolt hax head off with a saw, and then pulled the pin out and discarded the pin with a stuck bolt inside. I bought a pin for $7 and a 8.8 metric bolt ($0.50) from Home Depot. I am not sure if I am speaking about the same thing as you did.