Give the new method a try cand hurt. Did you choose temp unroot? There was a way to restore before but I don't believe it will work cause of the new security setup and are limitations to cmd options for getting in. Just fastboot back and do her again
Tried new exploit and nope it don't work.. Didn't think it would lol
Will fastboot tonight if it is indeed safe to do so.
As far as OTA Rootkeeper, yeah I did temp unroot.. OTA RK seems to work sometimes and not others for me so I wasn't really surprised that it didn't restore lol