I recently had my alignment done after replacing my lower control arms do to a bad ball joints. My car just broke luckily right by a stop sign. I'm trying to determine if it was my mistake or the shop I went to. What happened is the nut that holds the bar that goes from the frame to the control arm came off. Is it likely that I didn't tighten it up? Or is this something that would have been loosened to adjust the caster?