His team started complaining about lag after around 10 minutes of the game had passed and when they were losing. Some of them stopped playing and started idling in base. He left after someone else from his team left saying 2v5 when it was 4v5 with a couple of guys not really trying.
Replay
http://replay.garena.com/view.php?id=4d0cd3c1987f1
SS