Season 6 is showing that the igloo people are actually helping us. The black hole grows bigger and Jeb goes to the igloo because the Igloo Villagers have created a portal that will take Jeb to a new world created by the Igloo Villagers much like the old one. All the villagers will have to say on the island waiting to get sucked up by the black hole. Captains must go down with their ships.