My first thought when I heard Lovie Smith was fired was "He'd probably work well with Garrett." As an outsider looking in, I think they have the same type of mindset when it comes to coaching in the league.
I also think that if you want to change back to a 4-3, now is the time to do so. You have a huge hole at NT with Ratliff probably not coming back, and Price's probably imprisonment. Coleman and Spears are probably gone at DE. There's going to be some significant turnover on the DL. You have the opportunity to bring in new players to fit a new scheme.
This isn't an indictment of Rob Ryan. To be sure, his defense has played abhorrently over the past two months. But they were just devastated by injuries. You can't put that all on Ryan's shoulders. I think he did as well as could be expected given the circumstances.
As for Norv, well, I'm generally in favor of anything that removes JG's playcalling duties.
3rd and 21 - 3rd and 15
Dez Bryant the Redskins killer.