I don't know about the specifics behind the football guys. My guess is that during the coaching change there were meetings and there was a mutual decision made during player interviews. I doubt very much Clawson met with these kids and said "Last year you didn't adhere to my new standards, so no scholarship for you this year."
Scholarships are renewed yearly, but you can't just revoke them for no viable reason. My dad was a lawyer in the ACC for years, and that shit doesn't fly. There's big money involved here - particularly in basketball for so many fewer players. Schools who revoke scholarships - even when they make it through the appeal process - can still be on the losing end of million dollar lawsuits. UNC has a handful of settlements to prove it. Typically it's due to injuries since it's a grey area, but if you don't flunk out, get arrested, or get expelled for cheating or something, it's very dangerous to just pull a kid's scholarship and kick him out against his will.
I don't know why it's such a point of controversy. We had some kids who had no business being at Wake and who've since failed multiple other coaches. We had some kids jump off a sinking ship. We had some personal troubles unrelated to anything our coaching staff did. Guys like Ty Walker never quite crossed the line enough to cost them their college degree - but certainly didn't get full playing privileges as if nothing transpired.
This Tech/State game is close. Miller's going to kill us.