or at least that we've had since Billy Cheat.
What Spags did with our defense 5-6 years ago is rather inconsequential at this point in time. Our defense wasn't even that great for most of '07. We fielded a decent pass rush, but they didn't tighten the screws until the playoffs. In '08 he led a dominant defensive unit. That's it. In his 6 years as DC or HC, he can lay claim to having one great playoff run and one great season. That's it. I'm not saying that he's crap and won't ever have success again, but at this point he's had several opportunities to do so and hasn't. At least BB after leaving Cleveland went on to have immediate success again as a DC. He also didn't do nearly as horrible a job in Cleveland as his record suggests.
If we're looking to bring back DCs that have had some modicum of success in the past, why not bring back Tim Lewis, he's led several top 10 and top 5 defenses?