I'm not sure what sort of culture you have there at Joyent, but if it's a monoculture that fully supports this sort of grossly disproportionate public escalation and aggressive behavior from anyone, especially under the company's name, then I'm happy to keep Joyent off the short list of companies I'd consider working for or with.
Surveying the facts, I'm far more inclined to believe that this event simply provided you with a convenient self-righteous excuse for Joyent to stretch the truth enough to hang what you considered to be a troublesome contributor (and competitor) with his own rope.
[edit] On top of all this, I've had to fire a number of people over the years, and always, regardless of how justified it was, I did so with a heavy heart. The fact that Bryan Cantrill would speak to gleefully of firing anyone is, if nothing else, a testament to the myopia of self-righteousness.