[dsraven]

do you have an arc welder? place the ground, bust a little flux off a rod, stick it down in the hole, connected to your stinger, then get a buddy to turn the welder on for a sec untill the broken drill bit gets "hot" and then turn the welder off. that should take the temper out of the drill bit and also possibly heat up the bolt at the same time without damaging the paint. then it is drillable maybe.