The most recent episode was released before Stav announced his departure, but you can tell they already know he's left (Adam says something about "our friend Stav" which is a weird way to describe the longtime co-host of the show), and the episode is dire. Like they're going to need to get a new co-host or arrange a guest for all the remaining episodes because the show just doesn't work without him. It hardly works anyway. Losing Stav seems like a death-blow to me.