Included on the list of Madden 12 achievements is one that honors Greg Jennings' noted talents at putting his team on his back. Unlocking the honor only requires one to "Catch a 99 yard TD pass with Greg Jennings." In other words, if you're playing against the Packers, expect their handler to backtrack to the one-yard line on purpose all the time.
In case you're just now joining us, here's the source code. NSFW due to cussiness, as if your boss hasn't memorized this anyway: