put the impact on it.... it wont break a ring gear or pinion... what rear end is it..half or 3/4..?? chisel it off..dont worry about the bearings cuz theyre pretty cheap anyway and probably should be replaced regardless..?? oh i forgot ya just wanna do the seal...if its 3/4 ton ive got a couple of extra rear ends that have nuts on them.... buttttttt... the impact will get it and not hurt anything...