There were NC State fans...
discussing why the latest testing happened on the various message boards, and the timing. There were comments that Corbin found out about positives from tests earlier in the week and demanded the NCAA retest NC State last minute.
I first saw it on 247. Since then I've seen the same thing hinted at via Twitter, although it's still generally coming from NC State fans.
The NCAA should be required to provide a timeline and explanation for why they determined 2 positives passed the threshold for testing all players, including vaccinated, when that decision was made, and a timeline of tests and results.