If you've removed enough sprockets to expose enough body, put that into a 5 or 6" vise, and crank down hard.

Your goal is to crush the body until it either cracks, or binds to the inner body. Wear good protection, because if or when it cracks there's a good chance of some high speed shrapnel.

Once you've crushed it and have a good grip, grab the rim in both hands and turn to the left. Expect lots of spoke pinging, and you might need to tighten the vise even more, but it will come off.

Alternately, you can set a cold chisel against the outer cone and shatter it, allowing the outer body to come off. Then you can use a pipe wrench to remove it, or go back to the vise. Note when holding the inner body in a vise don't squeeze too hard, as that will increase the pressure on the threads.