Default [Q] Wifi tether stopped working

Unlocked and rooted XT1053 running a custom ROM and kernel. Running same ROM and kernel for months and was using wifi tether daily.

Wifi tether stopped working today, I just used it last Thursday without issue. No changes made to ROM or kernel in between that time. The only thing I've done since is clear dalvik/cache last night but I don't see how that could cause problems.

I usually just turn on Wifi hotspot via the quick settings tile and it enables. Now when I hit the quick setting nothing happens. When I go into settings menu to enable "Portable Wi-Fi hotspot", it gets stuck on "Turning hotspot on..."

Anyone have any ideas?

Edit: actually - unless I'm missing something I can't even find the native tethering app anymore...somehow it got deleted? Anyone know how it can be restored?
Motorola Moto X (XT1053) - [KK 4.4.4] Krypton v1.4
Asus Google Nexus 7 (1st gen) - [KK 4.4.4] ♦ PURITY ROM
Retired:
HTC One XL -> HTC Inspire 4g/DesireHD -> HTC Hero GSM -> HTC 8525/TyTN -> Motorola Q9h -> Audiovox SMT 5600 -> Nokia 3650 -> Samsung SPH-A460 -> LG SP510
Sorry HTC, you have disappointed me for the last time.