Not that anyone is necessarily interested, but in the interest of full disclosure in case anyone else happens upon this problem, the phone is again functioning as it did in the beginning of this thread. I have no clue why and cannot seem to get stock back. I got to stock 6.16.217. I ran the ICS tool. I selected the Root ICS Option. Reboot. Back to square 1. Have flashed many times since (with and without data wipes, etc, in varied sequences). No dice. So that said, if it comes back to stock again, I will let people know what happens after a simple reboot, because I have a suspicion that it wouldn't have mattered if I rooted it or not. In that case, maybe my phone has just been dropped one too many times. Who knows?