[busterbrown]

The independent lateral movement on the trailer would not have happened with a Hensley. It CANNOT happen as the design and mechanics of the cams and locking hitch ball struts prevent the start of the movement. The rig moves together when forces are applied on either the TV or trailer. That video is a perfect example of why Hensley and Propride hitches were developed in the first place.

Grant it, any accident can occur out of stupidity or driver error. But from the looks of how the trailer movement began, it is clear that a properly installed Hensley or Propride would have neutralized the forces that initiate "trailer sway". Ask any Hensley or Propride owner.