Yeah, I too call bs on the Özil comments here. He wasn't at his best, but that's just way off the mark.
Still maintain Cech should have started, because he is clearly the better goalkeeper. I can totally see why Wenger was surprised when he saw Carroll was starting though, since he hasn't started a game in like three months, but that decision by Bilic just made the decision by Wenger to go with Ospina a pivotal decision to decide the outcome of this game.