Why would Red John bug the CBI office?

i think by doing that we can safely rule out:

1- CBI Ron, because why would Red  John bug the office that Ron is in it?
2- Ray Haffner, he had access to the entire office and he is an expert in surveillance,he wouldn't do it this poorly.
3- None of the CBI team is an accomplice.


***************************AND THE IMPORTANT PART:



From what we have saw from 6th episode promo someone  blow up the 5 remaining suspects

It could be :

1- Red John trying to eliminate  all remaining suspects(he is not on the list).
2- The Tiger Tiger group's attempt to end Red John for good.
3- Red John is one of the 5 and he will cleverly fake his death. 
4- Brett Partridge isn't dead and he is taking advantage of that.
5- Patrick Jane will go nuts and blow them all!!!!.


/Discuss