Leaf spring hangers replacement

We are replacing the leaf spring hangers, and have easily used a cut off wheel to sheer away the bolt from the hangers since the bolt and nut heads were to rusted away. Now the problem is to remove the bolt from the bushing with out destroying it. (Such as putting a torch to it which would just burn the heck out of it.) Any ideas? Not really enough room to use a hammer and punch idea, was thinking of like a pulley puller type thing.