There's a lot of chicken/egg argument here but the most impressive thing about Matt Foley's defense is seeing perennial turds likes Lowry, Lancaster, Keke all just flying around making an impact on the game.
It begs the question if the scheme is letting all these guys play fast and loose, which gives us great performances from guys like Campbell and Douglas.
I'm sure it's a combination of things but a collection of turds on the team pre-Foley and some journeyman players post-Foley all playing lights out ball makes you wonder how much is scheme.
One thing for sure is there is a very different vibe on this defense. That may be the motivational speaker coming out.