Normally you can combat this by running the ball against the blitz.. Edwards really hasn't been able to get much on his runs, been mostly LamarWhen he's been upright and unbothered, he's found his guys or made plays with his legs.
It appears Demeco got sick and tired of letting Lamar dictate the matter and had his defense go on the offensive, which is apparently not how they tend to play.
The Ravens have been in hell since that decision was made. Good coaching 101.