I’m going to give it another go tomorrow after I get some of the “bad bolt” sockets. It looks like it was caught on the control arm at one point, but it appears to have made a groove when I turned the nut and that’s why it came loose. It won’t catch now in the original spot since the groove is worn in the arm. I’ll try to use some vice grips to pin it against the control armsThat’s factory hardware. Maybe try turning that to a position that allows use of a vise grip to help keep it from spinning. Try clamping it in place with the little claw against the edge of the control arm.