I'll second my dislike for Rob, but mostly because I just couldn't wrap my head around his schemes. Felt like he tried to outsmart everyone but didn't realize that he couldn't. (dropping your 2 best pass rushers into coverage and rushing only 3... 2 of the 3 being backups).
But still, he made an impact. The Cowboys defense came up big when needed down the stretch. They ended up dropping in rank but made big plays when they needed to. So something Ryan was doing must have been right. If not then we're far more talented on defense than I think.