American Horror Story's pre-finale "Birth" took the life of another Harmon, maybe even two, and seemed to setup an inescapable outcome for Ben. With Vivien and Violet dead, it would seem Ben's state of mind would predictably bring him to want to be with his family for all eternity. Check out this preview from the American Horror Story season one finale, "After Birth".
It would seem that Ben is still rejecting the reality of Murderhouse, but look at the scene in another context and ask yourself: what if he has accepted the reality of the house? Could Ben's intent for the child be for both of them to join Vivien and Violet, becoming eternal residents of the house? It seems that the American Horror Story writing staff has backed themselves into corner here, with a full out Harmon expunging being the only logical conclusion. However, with the weight of that certainty of a 'full reset' for season 2 hanging so heavily in fans' minds - how fantastic would it be if the ending of American Horror Story's first season went in an entirely different direction? It could be wishful thinking, but I think the possibility of bringing at least some of the Harmons back next season, and establishing a new chapter in the supernatural arc, already exist in the DNA of the show.
Consider these facts: while it has never been explained fully, the insinuation is that the house's function as a spirit trap is somehow connected to the Montgomery's unnatural resurrection of their child. Dr. Montgomery's grotesque experiments probably had nothing to do with what really brought their son back from the dead. Whatever force caused that 'miracle' to happen probably weaved the fabric of reality at the house into a crazy-quilt.
Of course, Dr. Montgomery's experiment on his son resulted in nightmarish chimera - but this was a function of his madness, and not necessarily the violation of nature that brought his son back to life. What if that 'gift' (or 'curse' ?) could be used to bring back the dead, sans freaky-deaky body modifications.
And imagine if the Montgomery's supernatural transgression caused the current 'otherworldly' properties of Murderhouse to emerge what another even might bring about.
American Horror Story certainly seems to be in a tough spot as far as resolving it's season one arc is concerned, it can either kill the Harmons and somehow release them from the house, since hiring a new lead cast would be a bit expensive if the old one is stuck there as ghost characters; go to a new house all-together, which seems unlikely given the gaping plot holes that still need to be filled in; or, find a way to jettison the characters that have played out their part, alive and dead, introduce a new supernatural mystery that extends on the unresolved aspects of season one, and retain at least some of the characters we have come to know and love and give them a task that requires to continue on in Murderhouse.
Regardless of how things work out, there's one thing that can't be denied by the American Horror Story Finale promo pics that follow this page: Rubberman needs to go on a diet!
AMERICAN HORROR STORY: Episode 12: Afterbirth (Airs December 21, 10:00 pm e/p). L-R: Dylan McDermott and Connie Britton. CR: Prashant Gupta / FX.
AMERICAN HORROR STORY: Episode 12: Afterbirth (Airs December 21, 10:00 pm e/p). L-R: Dylan McDermott and Connie Britton. CR: Prashant Gupta / FX.
AMERICAN HORROR STORY: Episode 12: Afterbirth (Airs December 21, 10:00 pm e/p). Jessica Lange. CR: Prashant Gupta / FX.
AMERICAN HORROR STORY: Episode 12: Afterbirth (Airs December 21, 10:00 pm e/p). Jessica Lange (L). CR: Prashant Gupta / FX.
AMERICAN HORROR STORY: Episode 12: Afterbirth (Airs December 21, 10:00 pm e/p). Jessica Lange. CR: Prashant Gupta / FX.
AMERICAN HORROR STORY: Episode 12: Afterbirth (Airs December 21, 10:00 pm e/p). Rubberman. CR: Prashant Gupta / FX
AMERICAN HORROR STORY: Episode 12: Afterbirth (Airs December 21, 10:00 pm e/p). Connie Britton. CR: Prashant Gupta / FX.
AMERICAN HORROR STORY: Episode 12: Afterbirth (Airs December 21, 10:00 pm e/p). L-R: Connie Britton and Frances Conroy. CR: Prashant Gupta / FX.
AMERICAN HORROR STORY: Episode 12: Afterbirth (Airs December 21, 10:00 pm e/p). Frances Conroy. CR: Prashant Gupta / FX.
AMERICAN HORROR STORY: Episode 12: Afterbirth (Airs December 21, 10:00 pm e/p). Dylan McDermott. CR: Prashant Gupta / FX.
AMERICAN HORROR STORY: Episode 12: Afterbirth (Airs December 21, 10:00 pm e/p). L-R: Dylan McDermott and Connie Britton. CR: Prashant Gupta / FX.

All I have to say is Jessica Lange is an awesome actress!!!!! I can't wait to see the finale