The thought that he was CIA or Mosad is silly, they wouldn't have a guy traveling around Iraq with a passport stamped with Israel.
I heard he had some anti-semetic literature with him as well as a Koran and a book on Iran.
The other strange link is the uncle's brother in Mosul. That was a center for Saddamites. Isn't it also where the brothers were were hiding out before the 101 got them?
A lot of people running around Iraq have Israel on their passports. I remember a non-jew Australian reporter getting captured and having to explain why he had been to Israel.