Well if someone was to deny in the next week they will still need to pick someone else, so what you guys are arguing about is the semantics of "closed".
They already have everyone ranked I'm sure so if someone was to deny, or do something wrong to get their appointment taken away they would just pull of the next in line correct? The way I see it is if you haven't got a TWE yet then you still have a CHANCE, emphasis on chance. Since it is such a competitive year admissions will have no problem with picking the next in line so don't try to look at it as Closed or not Closed, because anything can happen.