If you're going to trash the cable housing anyway, just drive a square flute EZ-Out into the hole and grab it with vise grips while you turn the nut off the back side. If that doesn't work, then drill.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!