There is no conspiracy. He will not be back to fix anything. Marlowe did the one thing that is never forgiven and that is blatantly lie to his audience. In the post interviews, he made it worse by gloating about it. There was no coming back from that. In the finale, he broke the trust that must exist between a show and its viewers. He led the audience believe something (wedding) would happen. However, he had no intention on delivering the promised outcome. Marlowe is no longer going to have a say in how the stories are going to play out on the show going forward despite what you might think.