That was a really good episode, even though I was hoping the plan would fail. They missed an opportunity by not calling it the Italian Job.
Being on Team Rachel, I was relieved when she won immunity. Andy finally demonstrated without a doubt that he is playing a really good game, and not just doing so in his head. Most importantly, the jury picked up on it. He joins Rachel and Genevieve in the group who can win.
I'm not sure that Rachel or Genevieve would beat Andy if Final Tribal were happening at this point in the season, but it isn't, so I think the presumed showdown we saw in the preview happens after they vote him out (he's probably next to go).
I agree on Sue and Teeny playing with too much emotion, but I would not lump Caroline in with them. She was leveraging Sue's emotion to gain her trust to use her vote and advantages. Unfortunately, she did not pick up on the ruse, and did not get to make use of Sue's idol.
This actually works out well for Rachel, as I think she has Caroline's vote, and didn't have to get her hands dirty.