If you are easily offended please go away this blog hates you
I believe that this is a Dog Walker.
I'm thinking bent frame.
The bolts don't even have to break on the leaf spring shackle...just slide across the axle.
Where I grew up we call that dog walking
The pins in the leaf spring that index into a hole on the axle mount plate are broken. The u-bolt will get overstressed and snap. Then the axle comes rolling out from under the bed. You guys were warm!
Terminal stupidity is my guess. I've seen that happen when someone towed a pickup out of a ditch by the axle instead the frame. The truck was put on a flatbed and taken to the shop. The driver in the video is on his way to a Darwin award. Al_in_Ottawa