Ok, ok ok calm down. Let's give me a shot. Here's my theory:
Patrick Jane was RJ before his wife and daughter murder. He helped the police as he said on television. But probably he was realizing that sooner or later the would have catch him. So in his madness he decided to create a masterplan in order to get inside the CBI and look for RJ.
He organised the RJ's friends in order to act as being RJ, so he can and only he can be able to catch RJ.
He ordered the murder of his family and then removed the order he gave via hypnosis because he knew that only a terrific thing like his wife and daughter murder could have given him the chance to properly enter inside the CBI.
He went to the asylum (in an episode you can clearly see him in his room and a smiley made by him on the wall).
So he brainwashed his memories. But then in the years he is chanced and there is no more trace of psicosis in his mind as the are no more the old memories.
He is unting down his old underlings, which are trying to fight the old RJ.
The new RJ is a group of people that only acting all together can reproduce the real RJ.
That's why the masked guy is Partridge, the money and the power are from Bertram and Washburn (who teases PJ on the feeling of being a murder).
They are independent now, they enjoy their work as "RJ" but the do want to play with real RJ.
In the end the actual RJ will tell PJ that everything started from him. That PJ one day realized that his hatred toward his father continued living on his family.
He loved them but the memories of his life with his father kept on coming.
That the smiley face is PJs face, because PJ wanted that the first thing the man\woman saw entering the room represents the outside of Jane's mind when he was in the circus and then they will be able to see the reality of the "inside" of Jane's mind.
Smiley ---> you look at me and I'm happy
Bodies ---> this is how I really feel, thorn into pieces
Now he is on the route to discover the leader of the RJ gang.
When Lorelei told PJ "they should have become friends in they very moment they shook hands" is because the actual leader is the "psychic" Ellis Mars.
Jane chose him because Mars is the perfect example of how Jane was before the change.
On the wall of the bathroom the write in reality I think was like this: "He is many".
Not only one and was a clue left by the second RJ to help PJ on regaining himself.
Rosalind met Partridge and Lorelei met Mars, and both of them entered in the life of RJ when PJ wasn't RJ anymore.
Ellis Mars is not a fool or a stupid, he impressed Jane when he told him "I can see the pain in your eyes" and in that moment he tried to show him who he was... but then the things went on another way.
Stiles told PJ that he would be surprised if he told him how many things he knows about "you and RJ" that sounded me like he referred at them as a couple of friends... or as they were the same person, but no more.
I'm not saying that PJ is RJ even if accusing him in the title.
I say he WAS RJ but he is no more. He can't have revenge as Carter said because was PJ to plan everything.
Ellis Mars is the actual RJ.