Technically... it's not a glitch. It doesn't affect the AI, it simply requires that the player on defense know how to cover the long lateral.
Do what Titan suggests:
Cover the back manually on the motion and play between him and the QB. You should be able to tackle the back before he gets the ball LEGALLY on a backward pass to cause a fumble, or bat the ball down to cause a fumble...
I have a guy run it on me in a 3rd and short situation. I blitzed a corner from the Nickel 335... He got between the HB and the ball and caused a fumble. Haven't seen that play since... 
Later
Founder
MaddenUniversity.com
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