Do you have a friend that can swing a hammer? You need a METAL block to put on one side of the bar and a LARGE hammer attached to a strong arm person to beat on it.
IF you HEAT the piece to make it straight then you will remove the temper and you will need an axle. There is a tool called a Port-o-power that can jack the piece back straight.
I used that tool to fix the "ears" on the front axle on my race car which where twisted and bent.
I agree to stay away from Firestone or Goodyear since they have only one thing in mind do it cheap and charge you a lot.
If you where near Aiken SC you could just bring it by the "hobby shop" and we could fix it for you FREE.
Guys this is for the ladies if you break something then you can fix it.