I think what Ed the ref was trying to say... since the pass was ruled incomplete, the play is dead. There cannot be a fumble or a recovery when the whistle has blown the play dead. Once the ball came out of Hasselback's hands the whistle was blown. I am guessing that Marvin told Ed that he wanted a review b/c he thought Hasselback caught the ball and fumbled it.
IMO... Hasselback did catch the ball. However, he was down and did not fumble. It should have been ruled a 3 to 5 yard loss.