IIRC, we used to take a die grinder with a cutting wheel to cut off the rusted exposed ends off of the bearing bolts, get those bolts out. Take a chunk of 4x4 lumber braced between the hub and frame, then use the power steering to get the hub broke loose from the knuckle (just moving), THEN pull or cut the axle shaft nut off and use an air chisel between the housing and knuckle to get the assembly the rest of the way out. Here in the land of salt and fancy chemicals to melt snow, I've had the bearing bolt heads too rusted to deal with and had to cut the whole housing apart with the blue-tipped wrench to get them off.