"when the computer is damaged, e.g. by falling and hitting the ground (or by a physical assault), buffered pictures for processing remain in its memory, and are not overwritten with new ones" This sounds bogus. The stills presented in the post suggests they were taken by design rather than some random stills "remaining in memory" after the alleged assault. There are frames from earlier in his McDonald's visit that it…
Any computer vision system is going to have an image buffer.
When you break the system it's going to stop overwriting that buffer with new images.
If he had been left alone the images on his blog would have been overwritten with new images.
Does it make more sense to you now?