I once was terribly manic and drove my car the wrong way through a crowd of students. I was stopped by a policeman, who reported the incident to my principal after he found out I was a teacher. I was called in to see the principal the next day. When I explained that I had a mood disorder and that I was not myself, he suggested that I simply not get into my car at times like those. The moral of the story is that one must be aware of one's mood at all times and act accordingly. Easier said than done, I know. In your case, perhaps you should have chosen not to do the presentation, or at least had the others do the actual presenting and allow you to be on the sidelines.