I read the transcript, and you're right. It does seem like Charley did it to get Emily out. A normal person would have just said, "You said WHAT?! Dlon't say it again." and then conversation over.
Charley is a mean manipulative character in the house and I am waiting impatiently for her eviction. I've never hated a houseguest (in BBUK) this passionately before.
C4 had no choice, even if Charley tried to milk it out on purpose or not. That word is something harsher to say - more than the F word. In all, I'm disappointed with Emily. I know she was joking around, but we all heard about Imus, how he was trying to get a laugh. It's not worth it.