User blog comment:Woohoot/Future Lucy and future Rogue timelines/@comment-904888-20130607115838/@comment-4829046-20130607120158

It won't be deus ex machina if they time the time-jump just right and come to a point of time where they can fix things but due to the limitations of the eclipse gate that's unlikely.

Since his other works include deus ex machina endings, we can expect that here.