It's been coming on for a while now. There was his claim that "constant naysaying" from the left has "has objectively hurt the war effort", and more recently this fascinating prediction: "I’m beginning to think that a (non-violent) civil war is coming—and that, frankly, it needs to happen." But now it's finally happened: in my completely unprofessional opinion, Jeff Goldstein has come unglued.
Basically, here's the story: Atrios wrote a snarky post about Jeff. Apparently, Tristero said something good about it -- I can't find it on Hullabaloo (the relevant time period seems to be off their main page, but not yet in their archives), but since Jeff apparently didn't read it either, I'm not sure what it would add. Jeff apparently took offense at the fact that Tristero was commenting on Protein Wisdom while criticizing him of Hullaballoo, and wrote a bizarro comment banning him. It has to be seen to be believed, though it is not work-safe (actually, it's pretty revolting.) In it, Jeff not only provides several different graphic (and completely gratuitous) descriptions of things Tristero is supposedly doing to or with his (Jeff's) dog, but also the fascinating suggestion that Tristero has been fellating, not Atrios, but one of Atrios' posts. (Is that conceptually possible?)
Jeff also says that Tristero "has the intellect of a gibbon". This DVD, which I highly recommend, has an interview with Tristero, so you can judge his intellect for yourself. (If you get the DVD, you can also compare Tristero's creative work to Jeff's. I was tempted to add that that wouldn't really be fair, but then thought: why on earth not? The only real difference I can see, other than quality, is that Jeff Goldstein advertises his artistic pretensions, while Tristero wears his so lightly that you wouldn't know they were there.)
This was just one of those moments that's too weird to pass unremarked.