It could be that the faculty decide matters of tenure.
The revocation of tenure is somewhat rare.
This is all baloney. Michael is a part time adjunct. He is not a professor.
Adjuncts are not tenure track. He is sort of like Obma - not a professor, an adjunct, with no future in the academy.
He has no tenure at the moment.
It is somewhat unclear what his position at John Jay is.
He is a Ph.D candidate at the New School for Social Research in New York City. That usually means he has finished all his Ph.D or doctoral level courses and passed all his qualifying exams. So he is most likely working on his dissertation which must be approved by his doctoral committee before he receives his degree.
It appears that he has been hired to teach a course or two at John Jay. He is then considered an adjunct, or part time instructor. He would be hired on a course by course basis or semester and paid per course, say $5000.00 and no benefits. He has not been hired as a full time tenure-tracked professor and can be fired at anytime.