I've had the most luck by giving up on trying to salvage the line- a broken bolt means you have to re-flare it anyway, JUST DO IT then cutting the hardline and pounding a 12 deep socked on to the bolt. Most of the time this works.
If that doesn't do it, calipers are usually pretty cheap once you get the core charge back.
EDIT: DUH. BLEEDERS. Welp, ignore this one.
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Shimano : Click :: Campy : Snap :: SRAM : Bang
Last edited by IthaDan; 03-16-13 at 09:05 AM.