Red John always has a lot of intel about Patrick Jane, RJ working at the CBI, always in the background, may make some sense. Following the logic of RJ working at CBI HQ, all members of the team (Lisbon, Rigsby, Van Pelt and Cho) are ruled out from being RJ since it would make sense for RJ to come work at the CBI (to keep tabs on PJ) after PJ was hired (why would he already be at the CBI when PJ is hired ? It would probably be difficult to explain to the viewers).
However, if Ron is RJ, I cannot understand why he tried to bug the CBI. Was it to mislead PJ ? Or did somebody else tried to bug the CBI ? Probably the tyger tyger organisation ? In order to know more about PJ investigation ?
Tyger Tyger is probably a large organisation of people with a lot of means. They are (for a reason unknown for now) also trying to find who red john is. They probably also want him dead and a lot of the people on PJ list are probably member of Tyger Tyger. This would explain why they all have so much interest in PJ's investigation to find RJ.
Not much of a foolproof theory but more of a bunch of hunches. Please let me know your views about it.
