That's an example of ambiguous or misunderstood phenomena explained by a professor who decided that there's more money in UFO BS than in his previous career (or sincerely lost his grip on reality, who knows).

I don't know, he seems to be really smart. Maybe it's a good UFO theory for a change.

It was an interesting thoery, but IMO his habit of making similar claims every time an interstellar object is discovered cast doubt on that original theory.