I would sit down with the boss, describe your inadvertent meeting, and just ask, calmly, to "hear his side". Express concern for wanting to foster a healthy working environment that promotes problem solving etc. If you can, I would do this with a witness (you might just want to talk with HR about how to handle this, depends on your place in the company etc.)---you also could go to the person over your boss, after talking with him, to express your concern about his communications. (style and content & any information that might help you...) Sounds to me as if you handled the situation well at the time. No matter what the complain, or how legitimate, it is not helpful to act as your boss has...