DarkUFO from the Staff of SpoilerTV just confirmed this was the episode they were sent to review.

"Sometimes you're forced to hate the conclusions or the wrapping things up in silly, absurd ways or in fact — naming no shows — it turns out they didn't have any idea how they were going to end the show or what the secret was or why there were polar bears. We have the answers and it's very important to us, for those people who have been following us from the start, to revealnot in a series of cryptic moments that leave a lot of questions begged. We're going to tell the story and explain who Red John is and what happened and what is going to happen as clearly as possible because the audience deserves that." Bruno Heller, lying his ass off. 

I honestly don't know which one is worse: he had this shitty ending in mind all along or he didn't know what to do and came up with this crap this year.