Smashed exhaust! Help!

Yesterday i hit a metal pole that was sticking out of the road with my 50. I have a polini smallframe exhaust system on it and thats the only part that got damaged. It was smashed in a bit and also jammed the rear wheel. Will my Exhaust brake if i try to knok it back where it used to be or is there some other, better way to fix it? - I dont have access to many tools. -And how do i un-dent it?
Help apreciated! -thanks [:bounce:]

Thanks mate!