You mean like this --> http://forum.xda-developers.com/show....php?t=2743117
Found another quicker way to do this:
1. Goto google.com/android/devicemanager and locate your phone.
2. Click "Lock" and chose a new number password.
3. Type the new password on your phone and it will unlock.
4. Now it should let your change the lockscreen to anything, and foxfi will continue to work
Still working after restarting phone and using Foxfi