I seem to have gotten caught in the Shelter Plane. None of the accessible Waypoints (of which there are 2, two for Hall of Heroes and back, and the Observatory and back) allow either me or my friend to exit the plane. Are we just doing this wrong? What's the issue?
The exit to the world is in the Observatory, not the main room. There should be a "Waypoint Portal" in the Observatory that you can use to return to the world.