Okay there was a situation between a co-worker and I recently, so I'll explain the situation first. One day he left me to fend with the customers all by myself for a long period of time while he talked to a friend on the sales floor. It is part of his job to help out but he didn't. I became very upset and angry (I thought the behavior was rude, and because he is my supervisor, I thought i felt I was being taken advantage of.) I approached him (visibly upset) and said how wrong and bad the behavior was. I explained the situation to his manager and he also agreed with my stance. This co-worker now says he feels threatened by me (as if I would hit him) as a means for me to get fired. Is this a defense mechanism because I criticized him and his behavior?