Looks like the fun is over...
I had been using Wifi tethering for root users and it seemed to allow me to use it just fine. All of a sudden this morning it stopped working and I got a push notification to my phone about mobile hotspot access being blocked. Came here, found the APN settings in this thread and tried it. Worked for about 30 seconds before the same thing happened again.
Looks like they are being pretty hardcore about it now...
Anybody else experiencing this or know how to get around it still?
Phone: HTC One (TMOUS) Unlocked
Rom: SinLess GPE 5.1.1
Recovery: TWRP 184.108.40.206