Well this is clearly inside the rules with Osunaa.
And who takes care to read the rules, and use them, and (is able to) takes the time to change his entry, these ones deserve their points (Sign of approval...)
Even I think that this is not "sumo-like",
like a Henka in Bench Sumo, but who didn't do that... (Henka!!!)
But one thing is always unfair - but we can't change that -
And that is that not every player knows this "late news" in time to react.
Depending on work, time zone, etc.
But this is only a game !
So it doesn't matter.
And without Osunaa in UDH (In jonokuchi...) I would see it as a big success if I would go KK :-)
Peter