If that's not a play where the ball comes out when his foot hits, I don't see why he didn't change it after seeing the off coverage. The QB has to know how limited his time is on a three step drop with five blockers against four rushers. It looks to me like he goes from Clay to Hartline (rather than Sims). On that play, you have time for a pump and throw. If he had gone from Clay to Sims, he had him, and he had time to get it to him. He would have taken a hit, but Sims won in time. Again, though, upon another look, I think he's going from Clay to Hartline. Once he sees that the defender doesn't bite on Clay (assuming Clay was the #1 option), I still think he needs to throw that over Clay's head. To me it comes down to my basic stance on our situation:
The O-line struggled, and Tannehill received more pressure, more often, than you'd like, but Tannehill isn't the kind of QB (right now, anyway) that has the quick decision making or elusiveness within the pocket to relieve pressure on the O-line. Maybe that's the next step for him, but the only upper-tier QB's who take sacks at rates close to that are guys who try to buy time with their feet - Rodgers, Big Ben, Wilson. Tannehill doesn't do that. He should have a sack rate that looks more like Manning's than it does Rodgers'.