Orchis has prisons set up for the heroes they capture. I'm assuming either the Cuckoos and Lourdes get captured or the way they escape doesn't let them go to New York to deal with the club. Shaw might not have gone to the Gala, or left early, because of MR and could take over in their absence.
The Iron Man preview makes me think most of the mutants who are in books got away from the Gala some how.