It may sound funny but watching the tape verses tape from 5+ years ago shows a lot of whats happening to our defense, especially the DL and ILB play.
In the past, we were very "gap sound" with very little penetration (either by design or player discipline). Aaron Smith, Snack and Kiesel were all "hold their ground" types of players with very little upfield penetration. Now we have Heyward, McClendon, Tuitt and Keisel all shooting gaps in an effort to disrupt and create pressure (may be due to poor play from our OLBs). This wasn't necessary in the past and while sometimes effective, it gets guys moving out of their lanes while creating others. Ever noticed Keisel has been in the backfield MORE over the last 4 years than he ever was before?
Secondly, our ILBs were not asked to "shoot gaps" as much either and were very sound in keeping running lanes closed. They weren't any bigger, stronger or faster but they were where the open lanes were to catch the runner IF he managed to get by the DL. NOW our ILBs are shooting gaps and running themselves out of plays. They are guessing a lot and the prescribed strategy displayed by the Eagles against us was on full display yesterday. (Misdirection, counters, play-action). This takes advantage of an over-aggressive penetrating scheme thus allowing cut-back lanes leaving the lone safety as our last line of defense.
The good news is our DL move well laterally BUT that is also what causes the problems with mis-direction plays and counters. The ILBs need to stay home more IMO in order to fix the problem. In Lebeau's system, the whole idea is to maintain gaps integrity and flow to the ball...they are just guessing wrong on the counters and getting gashed by the cut-back. It is fixable but our ILBs need to be able react SLOWER as their impatience is what is killing them now. Playing with speed and aggression will get you a few stops for losses BUT exposes you to getting gashed for big plays when they guess wrong.