it is possible to grind the sleeves out or shave them out by honing / boring. talk to a machine shop and see what they would take to do it. since they arent trying to make them usable it may be much cheaper.

you can make a home made press from heavy steel and a bottle jack that would apply enough pressure to push sleeves out if you can access them. last one i made was strong enough to fold 3/4" iron plate in half using homemade dies.

have you tried using a weed burner? for car size sleeves you can modify a cutting torch set up using fittings to accept a piece of pipe that can function simularly. probably need oxy / acceteline for enough heat. just lp may not produce enough heat on weedburner. make stand to hold it pointing in cylinder but slightly abovr so it doesnt snuff and do something else for 15-20 minutes.