I just watched the video of Dante's injury. It looks like he got landed on but instead of rolling hard to roll onto his back instead of his shoulder he pile-drives himself into the ground right onto his shoulder. Almost hate to say it but it looked like if he would have taken the contact stronger and/or rolled more quickly he might have spared himself the direct shoulder hit to the ground. We all saw how afraid of contact he's been pretty much from the start and I think that may have affected him here.
...Ducks for cover...don't shoot me!
The injury he has usually happens from impact from above. This means whatever is wrong with him probably happened before he hit the floor - it was from the impact of TJ Warren hitting his shoulder-neck area while landing from above.