What seems to have upset him was that I informed him of the video Gary Hurd was putting together (without mentioning Hurd by name) and suggesting that he (Tour) should consider taking down his video to minimize the damage that might ensue to his professional reputation.
Tour interpreted this as “extortion” and now believes I am “in control” of a “conspiracy” to destroy his career, and that I “hold the key” to set it in motion if he does not comply with what he interprets as my demand.
The terms in quotes above are the words he used in his email to my Dean.