I'd say its sawzall time. Are you replacing the UCA's? or were you going to re-use them? if it spins, the bushing inside is prolly shot, too- allowing the bolt and sleeve to spin.

are you still driving the car at this time?

I'd say order in all your parts and cut the Beatch out of there.

on the sway to uca stuff- I used a ratcheting tie down wrapped around the bumper to pull the uca forward enough to gain access.

__________________
1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.