[the_answers]

Sarah nommed Joel and Joel wasn't happy.

So Joel said Sarah had a good reason to nominate (i.e. Nick but she didn't !)
Think this is Joel's way of trying to break up Sarah's grip.

Sarah then tried to make out Joel was wrong. (and Aaron jumped on board too)
But she was exposed and came off worse IMO.

I love Sarah and how she is working the HMs.
But like the Christian kitchen episode, don't think she is always convincing the public on camera with her flimsy reasons.