There was a recent discussion starting about here …
… as to what some activators and chasers consider the minimum time to wait calling CQ / listening with no replies before QSYing to another band.
One minute does seem very short even for me in mid-winter so, like Richard, I suspect the activator had a HF equipment fault or mistakenly spotted for 20m (even repeatedly, and not notice the incorrect-band spots until later - hence the deletions).
I wouldn’t judge a particular activator unless that happens on more than one activation.