kirbyA decent alternative or not, the fact that he's an asshole enough to screw a team out of playing for ~20-30 minutes for no reason, while having done this to others before, and taking the time to be an asshole to different people numerous times in tf2mix makes enough sense to me.
This is evidence right here people, it was under our noses the whole time.
But in all seriousness I heard Kirby call someone bad in tf2mix once or twice before this, so I am just going out on a limb here but it could be him. My friends of friends have said he has ddosed in the past.