Axle stuck in warped 8.75 housing...please give advice..ty

How long has it been sitting on the ground? They draw moisture every day from the the heat cycles of day to night. Could be solid rust inside.

Can you turn the pinion with a breaker bar?

There is an axle end play nut on the passenger side, back that way off then pound the axle in till it stops. Then pound the other axle in till it stops. work the axles back and forth. If they don't move, you are pretty much screwed.