So I tried to unroot and return to stock tonight using the one-click method described on xda. Was tired on constant reboots on ICS roms. Followed the instructions, ran the program, its went through all the scripts, etc., then the program window shut down. 10 minutes later, the phone was still stuck on the black screen with a white Google. Won't do anything from there. Have to pull the battery to power it down. It will come back up in recovery, but choosing any of the options -- reboot or recovery -- gets you nothing except the black screen with the white Google.
Help?
Help?