Aren't those the double ball ends? Shouldn't you be able to just loosed the tuners all the way and have the string fall out?
Well found the link, with PICTURES! Hope
this helps. Oh, duh, stupid java, you'll have to actually click the "ReString" link. And, yes I was right, loosen tuners till you can see the ball and remove it, then remove the ball from the head.
LOL, bout time you can actually live up to your name now. Enjoy the snow, I will.