The psychologist may or may not have been qualified to make a diagnosis of bipolar disorder. It sounds like that definitely might be a possibility. I remember a med school classmate who suffered a manic episode - he went to the Dean's office and insisted he should be given his degree because he already knew everything.
Then again, your H may just be an entitled narcissist. It might be useful for you to read a book about narcissists and see if it fits. Or maybe read The Sociopath Next Door.
