hav a 2006 zodiak 450. turning to the right the bad boy accelerated,couldn't steer,in 3 sec.s hit a tree, broke my shoulder! seems o.k. now. what happened?

 

Sounds like your throttle cable became dislodged up by the thumb lever. Take the cover off and check it out. I don't know exactly how but I've seen it on two different occaisions..................It sucks you wrecked. Hope your OK.