I haven't seen the show yet, but Vander Slooth has previously given several "confessions or versions" of what he says happened to Natalie over the last couple of years. Maybe that was what Joy was talking about. He said he sold Natialie into white slavery and he also said she passed out and he threw her overboard without knowing if she was still alive.
Joy is the only one who dosen't wear a wire so they can't let her know in her ear if she is getting it wrong.
Do you recall that day that some staff person brought a note in to Joy and handed it to her? They made a todo about it, but never explained what it was about. That ticked me off.