I think someone stated this before. I don't know if I consider this boosting, as it would be easier to forfeit. It looks like he is doing this as a grievance to @Terrorshock1 and @Perceval (Monkey/Maiden). In which case, you should look at previous actions. If you've harassed, trash talked, or grieved this player in other ways - he is human and is going to react accordingly as well.

I think to ask for bans for this is developer manipulation, as it is not boosting - per say. I would say it was more done to spite the players on his team.