Here's the deal..................he got into a fight.
I don't think you should be booted for that. Suspended if anything. But not for getting into a fight.
Hmmmm...there is a distinction to be made, and a very significant one, if the early reports are correct. A "heat of the moment" fight is one thing, but what amounts to a premeditated attack that occurs approximately a week after the incident that precipitated the fight is quite another.
Put another way - and, again, assuming the early facts are correct -
he had ample opportunity to reflect on this and to come to the realization that he should have stayed out of the situtation. That he did not is a far worse indicator of behavior than one who starts brawling when the perceived "insult" is first delivered. The former is a considered, deliberate, planned response; the latter is a moment of passion that overwhelms reason.