matts91cherokee

I recently curbed it going into my buddy's apartments and now I have been getting my front left wheel having loads of negative camber and my brake rotor sounds like it's bouncing off my wheel. the other day I put it up on Jack stands and now I have the rotor and tire off and I was thinking it might be a hub assembly. I can't get my axle nut off though it possibly rusted on but it won't budge at all(I can stand on the breaker bar and I weigh 250 pounds and it won't break loose) any thoughts on ways to get that loose and thoughts what it might be?