He is either a murderer or a nutcase trying to get some sort of twisted attention.
It seems possible that his obsession with the crime may have manifested itself in his twisted subconscious to the point where he believes that he was involved in her death, when actually he was not.
As for the champaign and roasted duck... maybe thats just what they were serving in business class and his escorts didnt want to deprive the psycho of his request.
btw...in an article somewhere it mentioned that he used to "tool around in a Porsche"...
