I'm so glad you pointed out Josh's demeanor. I would say that's my biggest criticism of him so far. He's sulked on the sidelines late in games that haven't gone well, or stared blankly off into the distance when he should be getting focused on what to do when he gets the ball back.
If you want to go home and take some time to sulk by yourself after a big game that's one thing. But not in front of your teammates, and absolutely not while there's still time on the clock.