Memories in an active state are malleable--things that happen, emotions you experience etc. are prone to influencing the content of the memory. Eventually it gets "filed away" in a dormant state and doesn't change much unless it's reactivated, which can be triggered by vivid, related experiences. (Interestingly, there's research which shows that a reactivated memory becomes malleable again for as long as it is active, so current events can influence how you remember past ones.)
The theory in the article seems to line up with this, if you immediately view a video of something you just did, the memory is still malleable and you're more likely to remember it in a third person rather than first person context. If you view the video a few days or a week later, the memory may not be as malleable as it was at the time of creation. Curious as to why you disagree with this, do you disagree with the underlying theory?