I think this is probably the worst one so far this season because it doesn't even involve the player going to the ground as he lost control before he started falling over the guy at his feet. Tate didn't satisfy the requirements for a catch so it should have been an interception.
There's no way anyone can possibly say that Tate had the ball long enough after his second foot comes down to demonstrate that he is a runner.
As someone who believed that the Dez call was consistent with the Calvin Johnson play (actually happened to Johnson twice) and then believed that the Freeman TD call back last week was correct, I have to say that this Tate play is incorrect.
Same boat.