rear diff/axle removal help

Brake lines and u bolts have been taken off, but what else needs to come off in order for the axle to come loose? Theres a screw attached to the leaf springs but it doesnt want to unscrew when loosening. Theres no way to wrench the other end, correct, to keep it from spinning?Then should I put the frame under jack stands or leaf springs? any help would be nice!! Just got in from the garage and waiting for some help....please