I'm trying to drop the whole rear subframe on my 1992 190E. I've loosened/removed everything necessary. Shocks, springs, brakes, driveshaft, handbrake cables, fuel line, etc...

I've loosened the 4 bolts holding the subframe to the car. All bolts came out easily. I removed all of them and now the subframe is held by a floor jack. The bushing on the rear right seems stuck to the sleeve protuding from the body of the car. I tried everything to get it out:

1- Major amounts of PB blaster
2- Lowering the jack a bit and wiggling the whole subframe. Even with no jack or no bolts, the whole thing is held on by only this one mount
3- Jamming a ball joint pickle fork between the body and the subframe. I thought this was gonna work but no dice.
4- Even jumping on the wheel hubs on the right side can't create the force needed to un-freeze the thing.

I haven't tried heat because I don't have torches. Any other suggestions? I can't cut the sleeve off and weld another one because the threads won't work anymore and a cutting tool won't fit in there...