A flashback? To what? His family searching for him while he was in wayward pines. And that FBI agent knew of the experiment, too.
Unless WP didn't actually exist at the time, and they used it to bait his family there so Poat could take them in?
Was ethan frozen before his family?

Interesting news - WP will get picked up for a 2nd season. So there won't be only be one season.
Another stray observation you may want to include - does anyone else feel saddened now that Poat is dead? I mean, now after knowing his early life and seeing his determination as sheriff, I kind of miss the guy.
And another…

this is my take on the show (and i haven't read the books, so i don't know anything more than the show has shown). any hints of extra terrestrial activity are odd..considering the agent in the secret service knows about it..and jenkins does, and they're both outside of the wall. i'm leaning more towards government…