The ehics of forwarding emails

Imagine that you send an email to a professor about his late policy that ticks him off, perhaps for good reason. The professor writes a scathing email back to you, setting you straight. The professor thinks that the email exchange you two had is instructive and sends your email and his response to the rest of the class, with your name crossed out. Would you be ok with this? This is more or less what happened at the NYU Business School, even though not all the facts seem to be clear.

Regardless, this brings up some interesting questions regarding the ethics of forwarding emails. Did the professor adequately protect the student’s privacy
by  crossing out his name?