Well, I was in whistler not too long ago, and I was in the jump park, nad I totally wiped out. Nothing hurt except my crank arm is bent. How do I get this off without breaking the bike. I have my brothers bike tools to use. its on a 2004, or 2005 I cant remember, Gary Fisher Mullet. Its on the side with the chain rings and all. I am just interested in rplacing the crank arm if it is possible. Thanks.