Suspension Noise problems of the 2005 Honda Pilot

I drove over a dip in the road then heard a noise from the rear of Pilot I thought it was the muffler and it the muffler seamed a bit louder then normal but after looking at it I did not see anything diff. But a couple of days later after driving some friends to the airport and exiting I heard a metal sounding noise so after pulling in the driveway and inspecting the area of the exhaust I noticed the drivers side of the rear frame/ suspension was lower then the right side. And looking closer I saw a bolt or whatever its called that holds the frame cradle rusted off and separated from the main frame also the right side looks very rusted and concerned it could separate as well and the whole rear frame suspension could drop. I now am going to have it towed to a frame shop it is risky to drive it in the current condition. This is very bad. What if when I was driving to the airport with passengers it collapsed on the highway please look into this.

The incident happened while driving home from school at around 4:30 pm. Just like always around at certain part of the freeway the traffic began and everyone was slowing down. I began to press on my breaks. This is were things all went to fast and are kind of weird. Going about 60 mph, my SUV was not slowing down and it jerked to the left. There were a lot of bad, scary noises, ones that automobiles shouldn't make. Luckily, I didn't hit anyone else. My thought before I got out of the car was that I totally slammed into the center median. However, upon exiting the vehicle I saw that cosmetically the car was pretty much fine. All the commotion that I heard and felt didn't make sense at first but then it all came to fruition. It seems that going 60 mph with 10-15 feet my car came to a dead stop, resting on two right side tires and to left side wheels. The freeway patrolman went up and down the freeway to make sure I didn't hit anything (because I didn't!), and all he found were pieces of my car and nothing else. Again we don't know what happened, but there is a long list of mechanical, body and refinish work that needs to be done and replaced. So far around 7,000+ in damages. Not to mention they are not sure if the transmission and the frame are messed up. The rear sub frame, the piece that holds the suspension together, broke clean in half. We don't know if the front failed and caused the back to fall apart, or if the back failed and caused the front to fall apart. To correct it they are just going to repair everything that needs to be fixed, most which are being replaced with used parts. The only physical injury that occurred was a big burn/cut I got from the side air bag going off. Plus, by replacing the pieces with used parts, how do they know it won't fail again? especially because they don't know what happened in the first place! thanks for your time.