Neat. I'm gonna do a quick backup and then flash a stock rom and see what happens.
EDIT: Would we be neeing new firmware for the VoLTE thing they're releasing? Just occurred to me it could easily be that, too. Anyway, I'm about to flash the ZVA stock, but it'll be a bit to download. If you're gonna be up for awhile, want to text me the update and see what happens?