As you can see in the image, orientation lock is enabled. The problem for the 6+ has always been a rotating wallpaper even though:
1) orientation lock is enabled for portrait mode
2) the phone is not even titled sideways
3) wallpaper does not return to portrait mode until it randomly decides to
This is one of the things IOS8.3 claimed to fix.... Been a problem ever since IOS 8.0.
And the wiggle was just to get an extra page in, otherwise my wallpaper would have not been to visible.