I don't understand. The nuts are stuck on the hub. You can drive them off with a cold chisel and a hammer. I have done this before. Time consuming but not that hard, I had to do about 5 and it took about an hour.
Craftsman 3/8 x4 in. Cold Chisel
You could also use a nut buster. I don't know how well it would seen as i have never used one but i like the idea. I guess there is a possibility of you damaging the studs, but you can be gentle so to speak.
Craftsman Nut Cracker
hope that gives you some cheap fix ideas.