The images taken from the girls' video appears to my friend to be a mirror image, and if he is correct about that then his version would be the actual way BG would've appeared when walking. I will check grayhuze's video (I realize he spells it different on youtube but that is the websleuths username he uses here) to see whether there's anything there to support this theory. Of course it is possible LE mirrored the images but I do not see any reason for that nor do I think that was done. But I do find them to appear more "natural " my eye this way now that I've seen it this way. I do wish my friend would present his findings for himself. He's so impartial and has no opinion whatsoever on anything but the two images, as he lives on the other side of the earth and doesn't know about this case whatsoever. He would know more than me and be able to explain better what he's thinking I guess.
ETA - I am one of those who thinks that is the outline of a gun under his pocket on what would now, in this version, be on what we see as the right side of his body. I feel that elbow is jutted out further to allow for the gun that's sort of underneath it, or perhaps it's holster. JMO right now (I reserve the right to change it at any time, and often do!)