Replacing Body Mount (radiator support)

Got in a fender bender and I'm pretty sure these babies are bent (see pics). The top of the right one is also stripping. Just trying to figure out the best way to get these out to put a new radiator support on. I'm not opposed to buying whole new bushing mounts/bolts, but I'm worried about cutting these out with an angle grinder and having the bottom part still locked in the frame. Any advice on taking these out? Also would an 1/2" impact wrench do the trick? Thanks fellas.

 

Mine were bent like that and came right out with an air wrench. There’s a pretty large hole in both the body crossmember and the bracket so the rubber can move around enough to remove a bent bolt. On mine it was a through bolt with a nut on bottom. No captive nut to jam up, easy peasy.

 

Think I'm going to have a go with the impact. Worst case scenario, I have to cut it out (which I'm doing to the support anyway). Thanks man!