The same occurrence has been seen before in other photos. One speculation was linked to the transfer rate of the camera's processor. The reality is that cameras are suppose to record video at a fixed rate of say 30 frames per second, all while processing and storing it at the "same time" which may create a lag or back up flow of streaming yet not fully recorded pixels. So the imagery may be somewhat limited by technology and not capable of perfectly mirroring reality, but rather it only provides a distorted reflection of it.
For instance, I've notice that when taking video with a small digital camera that the sound will be heard long after the actual visual of the shot.
The sound track does not mesh with the visual due to the limitation of the processor.
Maybe the photo above is actually in between 2 frames, or a composite of 2 or more frames during the switch from one micro frame to the next.
It's just like when an internet page loads on the monitor, there's a process of how the page loads, and how it appears before its fully loaded. If it were viewed in slow or stop motion then maybe it would be more noticeable. Everyone's computer and internet connection has a different data transfer rate.
What if the camera processes the video images that it take from right to left, then that might explain the inconsistency of the image.
Similarly, if a camera processes the visual images before the sound track, then that would explain why on a small digital camera video, the sound of the shot is heard after the visual of the shot.