That's some funny stuff right there!!! All joking aside can you believe Oakland's D-coordinator didn't adjust for that ... I mean Sproles was killing them!
As for my defensive play in Madden, I almost always control the MLB when using the 4-3, and if/when I ever use the 3-4 I control the SS and play very aggressively with him (ala Palamalu). I NEVER switch players during a play, and for the most part I try to cover whatever duty my player is supposed to during each play.
I've never really played much as a d-lineman ... just doesn't seem like much fun? When I have tried it I usually seem to get "sucked in" by an o-lineman and remain stuck to them? Must be doing something wrong???