Yes, we're finally in the process of getting rid of some of them right now. One way tickets to Jordan and the like.
Previously I think there was an argument for letting them stay, in order to make it easier to watch them and penetrate their organisations. Now it looks like there is a strong public mandate for getting rid of them. It probably won't make much difference one way or the other in terms of the likelyhood of further attacks, but it's the will of the people and I think that should be good enough on any issue.
Maybe that will send a message....doubt it will be heeded tho.