I'm a therapist and I work with trauma victims and a lot of abuse victims. When an abusive relationship is happening there is always something called the "screw it" point. We use a different word that "screw" but this a family forum. When the screw it point happens it means the abused person finally realizes they are being abused, stands up for the themselves and reacts in a manner the abuser isn't prepared for. That can consist of going no contact, calling the police and pressing charges, or becoming violent themselves. After the screw it point is hit the abused doesn't return to the abuser. They've have enough and realize life is better without the abuser.
Jerry and the fans are engaged in an abusive relationship. All the signs are there: false promises, times of hope, devaluation, no empathy, word salad. And earlier today was a bit of a mocking, "I got you and you can't leave statement " with the whole I'm not selling the team when asked about angry fans.
So I feel we are on the brink of the "screw it" point. This has the potential of getting ugly fast as the OP said. I am concerned it could get violent and I hope no players, refs, or other fans get hurt. I really hope fans don't show up to the game or turn it off before it gets any more aggressive than it already has. But I feel the OP is correct and the fans have been abused for 20+ years by this narcissist and they're at the "screw it" point. It can get bad.