I don't know how this kind of mistake might occur , who can leak the most expected episode??? Was there conflict between Heller and with his colleagues??? Or this leak has been made deliberatelly by Heller himself ,likewise "maybe" like this site??? 

Thousands of questions... BUT

The leak episode most likey is the real one, because ;

1- It very fits with extended promo broadcasted previous week
2- This end is indeed schokingly primitive ,essentially that is the matter which make it surprisingly terrific. A simple end against great expectation of audience, power of opposits which Heller was using this method through the serial.
3- Two big lessons:

1st one : " You were smart but arragont, so you could never imagine a person smarter than you "

so being self-possessed is something greater than being smart 

2nd one: Great power is behind being unknown ,mysterious and always behind the throne but no-one can figure or would like to pick you as the one who wanted( I might consider mcalister as rj, but I did not want to pick him, he was not good enough for my own created perspective of RJ)

Apart from those, this power is same for GOD, we believe or think that there is a GOD behind all life , but who is he? There is no list of 7 either; first idea; 

1- Myself(like everybody does in the first place and said Patrick is Redjohn himself)
2- A creator very powerful ,unreachable, invisible and almighty(like RJ) ,but we saw that all his(mcallister) power was originated from his simplicity.

Other than these, there are absolutely too many ridicilous moments in this episode and through all serial , what happened to visualise? How patrick guessed the church and how might him be sure of that bertram was going to reach him? There are of course more complicated of question thousands of ,again BUT: 

We understood that this serial was simple and just for entertaining people,with some background subliminal purposes that was all, we expected too much 

I think this was the original episode and you will watch same on Sunday maybe with some little changes but highly likely with same essence and ending. 

Well done Heller, we enjoyed ,you could make it more greater but who would understand, basic humanity , basic art:)