There are no really important concerns about this question.
Anyway, since a contest question post on MSE was mentioned at the meta.MO discussion, I've mentioned the question also here.
Just in case. It seems unlikely that something is going to happen.
As I have mentioned, the OP of the MSE question no longer has an account - so they cannot undelete it. And I doubt that the poster of the only answer is going to request undeleting.