He did not have tenure. Despite publishing an organic chemistry textbook, he was employed on a one-year contract, renewable each year at the discretion of the Dean.
I know this because I read it in another article and because I myself am employed as a Mathematics lecturer at a Tennessee university on the same kind of one-year contract. Universities have stopped hiring tenure-track faculty, and one-year renewable contracts are the noose that you must agree to. I've been on a one-year renewable contract since 2010. I have a PhD in Pure Mathematics. My job is different from adjunct -- one-year contract means I have full healthcare and a 401-K. I just don't have job security beyond August 2023. It's a crappy way to live, but there is nothing else.
Wow. Terrible!!!
What do you teach?