Interesting management style of Café Library manager

I'm sitting next to some employees of Café Library having a meeting with their manager. Another employee comes over to ask a question, which remains unanswered. As soon as he has left the group the manager goes: "Smart-arse" in front on the remaining group, the poor guys colleagues!

What a great way of undermining his authority among his colleagues, and what an extremly inappropraite remarke for a manager to make about one of her employees! I know that the Business School is teaching me how to become a good manager, but I did not know that Warwick Hospitality's staff was working so hard to provide examples of how not to behave as managers, but I guess that it does not matter how you learn, only what you learn. Thank you for the lesson Jan!