To turn off your static shots (yellow), simply hold your finger over them. The box will expand briefly, then disappear.
To turn off face detection, go to the More Options menu.
Tap the camera assistant icon to the far left.
Tap Find Faces to turn it off (it should go from white to gray).
You can return to the live edit view by tapping the down arrow to the right, followed by the X icon. Now no faces will be detected automatically.