"One of the things we did to replace tubes at Trek was to cut a piece out of the damaged tube and drill some holes so a bungee cord could be used to put tension on the stump to be removed."

I had my son pull one end of the tube while I lit up the lug with a large flame. It worked, sort of. Ended up twisting the tube to get it to break loose from the heated joint. Destroyed the tube, but it came out!