When they did the post season evaluations and then got rid of the secondary coach.
Guys if you watch the Saints play defense the problem is fairly obvious. The team used the LBers to concentrate on the run, gave thier coverage responsibilities to the safeties and hoped for a pass rush.
People didn't go deep on us because Bullocks couldn't figure out where to be. they used thier backs and te's to manipulate the safeties resposibilities and go deep on the unassisted corners. When teams consistantly find ways to hit you the same way......and the coaches still have faith in those players you bet your rear end opponents were attacking your scheme.