See, I think the thing is Lebeau doesn't trust his corners to cover the spread offense (rightly so) so he gives them help in the form of dropping more LBs back, and keeping Troy back there. The problem is if you keep Troy back in deep coverage the whole game, you're virtually eliminating his gamechanging abilities, and now the chances that he'll get burned are considerably higher than the chances that he'll make a big play. Troy is at his best when he's blitzing on one play and dropping back the next, one play he looks like he's dropping back but instead he comes on a blitz, another play he looks like he's going to blitz but he drops back instead. If you keep him back the whole game, you're taking away his greatest weapon, his unpredictability, and now instead of QBs having to react to him, he's reacting to the QB. It's a microcosm of the whole Lebeau defense, which is forced to take on a different and unwanted character whenever teams spread it out with multiple WRs because the corners can't be trusted to cover all those guys without considerable help. And thus the whole defense is neutralized. The problem of inadequate corners against your offense has plagued us since 2001. We can't get any pressure on Brady because we can't trust our secondary to cover your recievers. We can't cover your recievers because Brady has all day to throw. The result is futility.