Things can be held in stacking poor alignments, so remove the rear axle, loosen the top shock mount, maybe the hanger mounting bolt (left hand thread).
Or remove the nut and press moderately hard (wrap your hand around the frame, and push with your thumb). They almost never require that much force to remove, or the procedure outlined above.
Or remove the nut and press moderately hard (wrap your hand around the frame, and push with your thumb). They almost never require that much force to remove, or the procedure outlined above.