Lisbon: Smith isn't Red John
PJ: That means we have work to do.

The normal dialogue should have been:

Lisbon: Smith isn't Red John
PJ: That means it's Bertram.

Seems like PJ isn't suspecting Bertram. Instead, announcing RJ as Bertram is part of the work he has to do.

By the way, who is the idiot that prepares these sneak peeks? Putting Mcallister and also his hand in it?