Ah, my poor, ignorant conspiracy theorist - what do you think it is that the constabulary does to criminals? It doesn't leave them to sit in space, nor cull them because that's the easier option. When the crew evacuates via escape pods, they'll be placed under arrest by the local siege forces. From there, the Manchester BPA garrison may choose to hold them in custody and press charges, or release them on bail. It's all rather trivial, really.