I didn't realise how famous this one is! There is a ref to it on a resto in
www.dropgates.com & the last line on his suggested removal procedure is as follows "......then you can remove the pin but you have to discard the bus!"
Anyway mine's out. I heated NOT the pin but the housing for it at the bottom of the brake lever to a bright red with the oxy. Then I put the biggus dickus vice grip in my armory on the end of the pin and gently rocked it back & forth till the pin rotated. Then put the shaft of a screwdriver under the vice grip & lever the pin out- undamaged.