I was starting to wonder about that too. My best guess is that if they appear at all, it'll be as part of the task force for the Final 2. I'm really not expecting them to walk in as interviewers, but it's not completely out of the question.However, if She Who Must Not Be Hired does come in to help one of the F2 out a little, I don't expect her to stay long. About three seconds should do it.
'Hi! I'm --'
'You're fired.'
'Bye!'