I think that RJ wasn't the one behind the explosion in jane's house.
I know it sounds crazy, but if you see the 6x07 promo you can hear rigsby saying that the bomb killed jane and the other suspects (bret stiles, ray haffner, sheriff mcallister).
we know it's a lie, jane survived. it's a trick to confuse all the law enforcements because they have tygers everywhere, and this is bad
I'm starting to believe that it was patrick himself who bombed the house... why? it's simple
1) he can fake his death and move freely (he knows that every law enforcement is corrupted, it's too risky coming back in the office...)
2) he can use the same trick for the other suspects, faking their deaths too.
3) without knowing his location, red john can't find jane or know what he's doing/planning. this time he's not a step head
jane is not stupid. he probably had a "last trick" in case the situation in his house was out of his control, and that trick was the explosion
now you're probably thinking "why faking the other suspects death??"
there are 2 suspects that would gain an advantage from a fake death more than the others: one is RJ, the other is BRET STILES.
yes, stiles is in trouble with the FBI and he's constantly searching for a place where the law can't reach him... patrick gave him this opportunity, so that he can disappear silently and without being caught.
if by any chance someone finds him, he can say "See my power? I returned in the living world as I said before... I defeated even death!!"
but... now bret has to return the favor once again (just like when he took lorelei out of prison).
what patrick wants from stiles is easy to guess: confirm RJ true identity
(jane probably figured who's red john, he just needs to confirm it from someone that knows the truth)
if stiles is "dead" he can confess, RJ won't come to kill him (plus, he has a lot of other bigger problems to think of...)
even if RJ is haffner (someone stiles can't betray) thanks to this trick he can say everything without having to worry.
maybe I'm just crazy, but I think that this was patrick's secret plan in case the "5 suspects meeting" couldn't end with the RJ reveal
I don't know how they survived the explosion, all that I can think of is: remember that patrick had a hidden gun? he never used it or showed it to the others, maybe that gun was used to make something explode...
oh, almost forgot: in my opinion RJ is Ray Haffner.
