As for this "retirement", its really not that big of a surprise if you listen to the press conferences, in Monday's, he really sounded like he was going to put a lot more thought into coming back than he has here recently, and when he talked about going home early for once to see the grandkids, its not surprising at all.
On top of that, you have what, 25 out of 32 teams looking for a head coach this off season (I know thats not correct, just saying it seems like everyone needs one this year :lol), with Gregg Williams having another good defensive year, chances are, he was going to get phone calls come Monday morning or by the end of this week. So maybe Joe is doing something for that nature :shrug: hard to say...
But in my opinion, I don't think this is that surprising...