First, I agree that the injury was not owing to any defensive maneuver. He was running when tackled. The most unnatural thing to do would have been to straighten out both legs and let your face smash into the turf. I probably would have had both legs doubled up, if anything. And, yes, on Bo's injury. The LB came down on top of his back and the severity of the injury didn't become evident until later. In my case, the orthos thought I must have subluxed, since the trocantor fractured the acetabulum on the way out. That was when I had the sharp jab in my butt. However, I was able to limp into the house to stop the hemorrhage between my eyes, so, obviously, it must have self-reduced, if it did sublux. Can you imagine what it took to reduce Tua, when you look at the mass of his glutes and quads??