This whole 'selfie' business is a distraction. Haise was not 'taking a selfie'. That was a term someone threw in for humour. He was holding the camera and filming the inside of the spacecraft, and he happened to get himself in shot for a short time. This is not suspicious, certainly not impossible, and all you want to do, tarkus, is complain about the words used.
How about dealing with some actual real points, such as the effect of perspective and camera position on whether or not the SM is visible?