I agree with RG. Give it a shot. But, this is a job that's a hell of a lot easier if you have the correct dropout alignment tools. They make it simple to get proper leverage to do the bending and then make it very easy to get the dropouts correctly, and precisely aligned. Any shop should have these tools. For all the knocks that steel frames take, this is exactly the type of instance that makes them a good choice.
You can now get a good quality steel frame that weighs 3 lbs. The only other material that's going to survive a lot of bending is titanium. With CF, forget it. With Al, the amount of bending it will take is very small - and that's pretty much limited to correcting dropout alignment. Let the bending begin!