Don't be Drawn Offsides:

Having a problem with your friends drawing you
offsides with the fake snap option? Don't be 
worried. All you have to do is press the B 
button when you hear a snap. If the snap was 
fake pressing B will bring up the audible screen.
Wait a few seconds and it will go away. If the 
snap was real you will dive through the line 
leaving a hole for another player to get through.