Alright after watching episode 6.4 I am convinced that RJ is Ray Haffner. All of the clues fit too perfectly. Rosalind Harker's description matches Haffner- He has average height, straight short hair and is around the age of RJ (late 30s, early 40s). Then there are all of the clues that are associated with Lisbon.

The only reason RJ lets Lisbon go in 6.1 is because he either has a thing for her or is in love with her. We know that Haffner offered Lisbon to leave the CBI and join his own private security agency. This is because he cares about her and doesn't want her to get hurt. RJ only has a problem with PJ, not Lisbon. Also, when RJ calls PJ at the end of 6.1 he calls Lisbon "Teresa", and out of the seven suspects on the list Haffner is the only one that calls Lisbon by her first name, "Teresa".

Then there is the clue with "He is Man". If you put that together you get "Heisman", and we know that Haffner played college football and that there is some sort of trophy in his office. Also, in the season 2 finale RJ tells PJ "Roll Tide", which is the slogan for the Alabama Crimson Tide football team.

As far as the other suspects go, we are down to five. Partridge and Kirkland are dead. DEAD. They did not fake their own deaths, that would just be poor writing. Bret Stiles is too old to be RJ and I believe that Sheriff McAllister is not a big enough character to be RJ. Reede Smith doesn't fit the description provided by Rosalind Harker as he is too fat (and you know it). That leaves Ray Haffner.

Also, check out these two clips. Haffner and RJ walk almost exactly alike, this can't be a coincidence.

http://i.imgflip.com/4a7bq.gif

http://i.imgflip.com/4a7e2.gif

The clues make too much sense, RJ is Ray Haffner.  

So my biggest question (other than how did RJ get PJ's list) is: is the Tyger, Tyger cabal aware of who RJ is and are they protecting him or are they unaware and now trying to catch him rather than letting him operate unimpeded because he endangers their group now that PJ is close? Also is the Visualize group at odds with the Tyger Tyger group or do they work together? Lastly, why doesn't RJ kill Jane now that he's truly in danger of being outed?

This is a General Comment:

I think the theories on this website are confusing bruno. I also think that you guys are one step ahead of him when it comes to guessing who RJ could be ;)

He seems to be chaning the script quickly.....and adding new twists to keep y'all guessing, but you guys are figuring it out.....thats pissing him off me things

Awesome!! more power to you guys..... :)

Stiles : too old to be RJ, RJ was a teen or in his ealry twenties when he drew the face on that barn in the 80s
kirkland: DEAD
partridge: DEAD
McAllister: he's a lefty, he used his left hand to help Jane on the roof; however RJ is right handed remeber earlier how partridge explained how RJ used 3 fingers of his right hand to draw the smiley face?
Smith: i dont think he's in shape to be RJ as described by his blind mate (can't remember he name)
Bertram: it's lame but he's bald, doesn't suit the description of the blind girlfriend PLUS he's meeting with McAllister and Smith tells me int's not him
Haffner: till now i can't find a single clue to not point the finger at him
ray = roy?
middle aged man?
whistler?
physical description matches?
he says Teresa not lisbon?

that's what i think, we will know in november :)