How about we not give the refs any more ways to subjectively control the game?
If it is up to the ref to decide if a guy taunts on the way into the endzone, and a critical TD is negated which ultimately decides the winner, the betting world would go nuts. That ref would be living on borrowed time. If they made this rule happen, I don't see any refs calling it.
As I said earlier, I think Tate should have focused on scoring first, then taunt away. The object of the game is to score points and that should always take a front seat to antics. Yes, Tate scored, but the antics gave the DB a better chance at him, and slowed his progress enough to create contact before the score. That is the only issue I have with that play.
We can argue about how close it actually was but that is not the point. Do the professional act first, then once you've (safely and securely) succeeded, THEN taunt the hell out of the other team.