dropping any. But yeah, even if they did, these 3 guys accounted for such a huge amount, it would barely do anything if they had to drop a few 2 stars. Over 500 pts among those 3, when 2 star guys are only worth 20 pts. So it wouldn't matter much.
Class rankings are fluky anyway. A lot of different things have to be considered, but people only care about the number on paper. Even if the difference between 10 spots might only mean adding two average dudes. For example, in 2015, the #39 spot was UK and the #30 spot was only like 150 pts more. Add a 3 star guy who is #50 at his position and another regular 3 star and that's a jump from 39 to 30.