I looked at it
That particular number was hammered.
No one else was bet with the favorite like that
Was $46 the other way, also low. Can't say if it was bet late, but probably was.
Before you get too excited, there are numbers like that all day every day, and 99% get nothing (that fig includes the multiple occurrences in the same race).
Overall bet down numbers win often enough, but there are lots of them in the same event .