Guys, you overly simplify this. Dat didn't call out the play ... he just called out the result. The HOW is still up the O.
Also, just because a D knows the play doesn't mean they're always in position to stop it. It's up to the O to make sure it happens.
Heck, we had 4 running plays in our Super Bowl run. EVERYONE knew we were gonna run. Does that mean Troy audibles out everytime he thinks the D has us smelled out.
Fark that. We just ran over them anyway.
Dat simply yelled out, "Watch for the shuffle pass". It didn't mean we were in Shuffle Pass Prevent D. We still had to be in position to make the play and the O still had to make play work.
But in retrospect, I think if the D smells out the TRICK plays, then the QB should have the option to adjust. Trick the trick.
But even if Dat didn't call out the Shuffle Pass, I think we were in run D and would have stopped them.