[potmat]

> Besides his claim, what basis do you have for describing this as a “fact”?

None other than the same info is repeated by a third party as another commenter noted: https://www.thefire.org/news/professor-suspended-reasons-unk...

Your other points may be valid, I was just speculating. There may be additional protections here other than the handbook since he seems to have tenure, which brings additional special protections (obligatory "I'm not a lawyer")