Dolphins and Tua can lie and say it was his back if they want too, but it was clearly a case of him having his bell rung. Don't know if he has a concussion or not, but when he was wobbling it around it didn't seem like a back issue. Not saying his back wasn't bothering him too, he got bent and twisted on the early qb sneak from the 1. Just think he did and said what he felt he needed to do to stay in the game. Especially with some people questioning his durability and the fact that he got knocked out of the game against the Bills last season too. Just like the Bills and Knox acting like he was down because of cramps when it was very likely due to the hit he took from Wilkins. Love me some Tua and his toughness and clutch plays helped win this game. I strongly doubt the Dolphins pull it off without him.