I wouldn't be surprised at all, if Hakim himself turned in those four Iranians. Everyone is doing everything to get more power... Hakim is usually the "Iranian guy", but he is now being courted by us, since he is the "non-violent" alternative to the "other Iranian guy" Sadr. The religious Shia need to have a part of the power-cake somehow, and it's better to have Hakim then Sadr.
To finish the confusion: I thought the Iranians were invited by the Iraqi President!?
You may be right about that.