Loyalsmith

So my bad driving made the LCA-A/wish bone make love with a curb and now needs replacing, i got the part and pulled the two bolts out and removed the sway bar. But now i got the ball joint and the nut is in the dumbest place i have ever seen, better yet its locked on tight with the 22 open end not being able to move it and the closed end not thin enough to fit onto it, any ideas on how to get the nut off before i buy a dremil and cut the whole nut off.