I've given this quite a lot of thought, and what we know about Rj is really only two things1-He's connected to the FBI/CBI
2-He has a lot of accomplices 

Now this is just a wild theory but what if Rj is actually Patrick Jane himself as a split personality, I know what about kidnapping Pj in season 2 and the whole "tiger tiger" thing, as I said Rj has a lot of accomplices he might've managed to make someone pretend he's Rj subconsciously to feed himself that whole pursuit feel of catching Rj

Also throughout season 5 Pj has talked a lot about the powers of the subconscious mind, so it could be his mind is playing tricks on himself, also Rj has insights on things like the list of seven and his childhood memories, things which are very hard if not impossible to get