Ok, after having watched the leaked episode. There's only one conclusion I can come up with. I work in film as an actor, I know the steps directors and producers take when filming. This too me simply seems like a bunch of scenes just bunched together (maybe even a few out takes.) 

Jimmy Gadd also tweeted this: Just ignore the spoilers & watch the complete & finished episode this Sunday. I'm sorry it happened but thank you for being such great fans!

A lot of the time unfinished versions look poor compared to the episode airing, so guys calm down. We will see the real thing on Sunday. 

It all depends on what changes they make, what they add in etc. The only thing that doesn't make sense to me though is the promo. It literally reveals the entire episode. I'm sure about 99% of us figured out who RJ was just from that. 

Will this be different from the promo? Unlikely. It all depends on what they add in to the finished version to make what looked so simplistic, a typical mentalist episode. 

Also for those of you who have twitter feel free to follow me @officialwillw 

I can't seem to find any mentalist fans on there lol. 

Just chill guys, wait for the full version on sunday before you continue making judgments. Editing is a long process, and a lot of things can change.