The writers explained it wasn't the VP official memorial, but a CIA one. That makes some sense because you don't want all the CIA faces out in public.
Saul is not the mole, that is just too stupid, more so because how does he move a car when he's on a boat?
Quinn makes the most sense to the mole. I was happy with the episode, it leaves many things open to do next year,while really getting rid of some dead weight characters. I was shocked they actually did it this year.