IF AlQeada in Iraq gave him up, it might serve two purposes for them. It makes their #1 a martyr, and it allows them to change directions and refocus without admitting they were going the wrong way. A change of leadership, creation of a martyr, and a saving of face.
IF they capitalize on it, by restricting their actions to attacking coalition forces, and NOT killing Iraqis, it could help them more than hurt them.
IF they continue to try to encourage sectarian violence and to kill Iraqis, then this is a bad thing for them.
I think I mentioned Task Force 140 earlier, and that is probably incorrect, I think the correct unit is Task Force 145.