I tried everything today and the nut just doesn't want to come off. The nut splitter I bought didn't even fit over the nut because of the spindle arm. I'm close to giving up. I'm thinking I may have damaged the spindle or the upper ball joint tapers when I tried to rip the nut off and that's why it's spinning so freely. I tried putting leverage on it with a prybar like Billybob mentioned, but nothing. I even tried a steel pipe. The nut still spins. Not sure what else to do but to take it to someone to torch the thing off. Entire weekend down the tubes.