SD Encryption won't turn off - Sprint M8 with v4.4.3

[Overboost]

Since the update with Wifi calling, once the phone powered up, it prompted me to add a lock screen. I did not have an SD card in the phone. I thought it was my work pushing it as part of the Exchange policy, but after deleting the account, it remained. I added a card last night, but am still unable to turn the encryption off. Any suggestions?

 

[Overboost]

I still have no idea how to disable this. Short of a factory reset, I'm at a loss. Why would the update force SD encryption and prompt for a lock screen when no SD was present at the time?!?