First drive after brake upgrade, then - BANG!

Give the OP a break. He is obviously discouraged and the more he probes the more he finds and is now frustrated. I’ve been in that situation and it can be a bit overwhelming. To the OP, just step back and take a deep breath. After reading the advice given try to respond to the post as quickly as you can with as much info as you can. These guys are truly trying to help and are very knowledgeable and they get frustrated too because they want to help but they are not there
Coddle him all you want, but they're right. How long does it take to smoke a car over really good after you buy it? An hour? Two if you're slow? There's zero excuse for not getting familiar with a car after buying it. He might save his life or someone else's.

Having said that, IMO, the torsion bar clip popped out (IF it was ever there) and the torsion bar backed out. I just bet it's not broken. All of this is easily tended to by getting the car on jack stands on the frame rails all the way around and getting under it and actually LOOKING. We cannot do it for him, so the next best thing is our advice. We're not here to wipe his butt and tuck him in. We're here to help him with his car. We can do that if he listens.