Try putting a flexible magnet down the spark plug hole and work it around a little- - - - -you just might get lucky and grab the wire without pulling the head back off. If it doesn't work, all you've lost is a little time! An air blow gun with a thin piece of tubing adapted to it might also come in handy- - - -blow the debris around where the magnet can grab it.
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!