I just finished a match against the coach Hjrodgdar. Throughout the game he was refusing to advance the turn, or select blocking dice when I was overwhelmed. He forced me to wait for the clock to run out on his turn. This bloated the game well past expected finish time. He never missed his own turn so clearly he was paying attention to the match.
I attempted to talk to him, and was only ignored.
I'd recommend not playing against him in the future.