You might try heating up the guitar string real good and let it cool slowly. That should knock a lot of the fight out of it and get it to listen!,,
I was going to suggest the same thing. This process is known as annealing, and involves heating the metal to just shy of "red hot" and allowing it to air cool. This works for photo etched pieces that need to be bent to shape as well. One advantage to this is that it reduces or eliminates the tendency of the metal to "spring back".
I use a small pencil torch for this, but for a high E or B string a butane lighter should be sufficient.