I was there also, and I have no idea wtf this guy is doing.
'Afking' thou his mouse was clearing moving around for multiple rounds. Trolling on Rounds 1 & 3, hiding in a corner intentionally while teammates tried to complete objective.
TF-ing on Round 9, 11, 15 & especially 19 where he just sat there and let enemies run past him while they planted C4. Mic Spamming during second half & pretty much trolling and griefing for the duration of the game.