Can this be fixed at home?

If you decide to try and remove the whole rear end,, as opposed to undoing the axle with a wrench,,.. just try taking off one of the u-bolts before anything else,, then remind yourself there's 8 u-bolt nuts...

I think I explained things wrong. What I meant was that I think the axle is stuck now that the rear is locked up. First thing I did was remove the five axle flange bolts and try to pull out the axle. Maybe a little more exertion or an axle puller can get it done. You're right about the eight u-bolt nuts. That would suck.