This has happened to me a few times now and I have no idea what it means... I'll describe it the best I can.
The screen will go blurry and there will be a dark overlay over it -- you can still see and interact with the screen but you can't make anything out -- in the foreground at the bottom of the screen are the words RESIZE and MOVE each with little errors next to them. There's also a red line in the foreground. You can't click on any of the arrows or the RESIZE/MOVE text. The back button or menu buttons won't exit out of this mode and it is even still there after the lock screen. I've ended up just leaving the phone alone and 10-30 minutes later it goes away.... What the heck is this?!
The screen will go blurry and there will be a dark overlay over it -- you can still see and interact with the screen but you can't make anything out -- in the foreground at the bottom of the screen are the words RESIZE and MOVE each with little errors next to them. There's also a red line in the foreground. You can't click on any of the arrows or the RESIZE/MOVE text. The back button or menu buttons won't exit out of this mode and it is even still there after the lock screen. I've ended up just leaving the phone alone and 10-30 minutes later it goes away.... What the heck is this?!