Some more thoughts now that I'm back at a real keyboard... (How do you guys type worth a darn on touchscreen phones? I think I'd rather be waterboarded. Anyway...)
Of course Parcells didn't have to keep Zimmer. Why would he fire virtually everyone else but keep Zim? Parcells talked early on about how much he liked Zimmer -- the taskmaster approach, the strong work ethic, and of course being a coach's son.
Of course Wade couldn't fire Garrett. He couldn't even get a universally respected coach like Reeves in here to help RJ! I still remember early on in 2007, Wade was asked about the job Garrett was doing, and he said he was doing fine, he took charge of the meetings, etc. A reporter asked if he could get someone else in here, and Wade said, "I think Jerry would let me hire someone else if I didn't think he could do the job..." Notice how he didn't *know* he could.
MacMahon said after the Washington debacle with Kneeldowngate when all this started being discussed that if you talk to guys in the locker room, they know that it's basically a dual-head coach system here, with one guy running the O and one the D. But no one really had a problem with it. It was just the way it was.
I really didn't have a problem with hiring Garrett as a promising young coach and giving him a year with Sparano to learn. That happens all the time in coaching, and frankly there weren't a ton of options with Parcells walking out relatively late in the process (though I do think Sparano got shafted a bit in the process). There are and have been forever in football young guys who are seen as smart and bright and are given a chance. My problem is that Garrett has proven to be an average coordinator at best, and yet Jerry still seems stuck on him. Why? Why should a guy get such extra credit simply because he played for us and his dad was a former employee? This isn't some rinky-dink family business, it's the biggest team in the biggest sport in the US. It makes no sense, but Jerry will do what he wants to do.
Personally, I think Jerry planned all along for Wade to be a stopgap while Garrett got his OJT on becoming a head coach. And it was probably reinforced by the 2007 offense being so good. That's partly why Garrett got such input into the coaching hires made when the Miami guys left to be with Bill. I think Jerry was frankly surprised when it turned out that the defense only got better and the offense only got worse as time went on, and it became clear that Wade was a better head coach (and personnel man) than Jerry expected.