Have used a hammer and chisel to cut thin bushings to the point I could fold it in with the chisel. On some thick bushings come out like crankshaft pilot bushings, find a piece of round stock (like a cut off bolt) that fits snugly into the bushing, Pack the bushing full of grease and tap the cut off bolt into the hole in the bushing. Let the hydraulic pressure of the grease push it out.

There is no mechanical problem so difficult that it can not be overcome by brute force and ignorance.