How to reset phone (DROID TURBO) system settings without factory reboot? System UI has stopped working
If your phone is encrypted, the only thing I can think of to get your data is to install a custom recovery, a custom ROM which uses a custom system UI and start the phone. Your data should be there. If it's not possible, you will have to turn off the phone, press and hold power on and volume down and factory reset. This last part is not recommended since you may loose your data.