The hex is totally stripped and grabbing the pin does nothing. This is just a strange little bolt. Its going to be Turbo who takes the drill press or just his magic to it. Worse he can do is get the bolt out with little or no damage to the threads. This is why I keep cheap spares... for situations like this. Cut the pin because I wanted to place the damaged caliper pads in the replacement. Still, can break it apart and get the new seals, crush washers and the speed bleeder out of it.
Im keeping the R3 till she or me croak so I'll collect spares as they show cheap.
R U going to come to Leakey? Get on a plane to Houston and ride the Valkie. Im leaving Tuesday October 8th, in the morning. Will return after The Toro and his posy leave. Eight days in West Texas.