The puzzle is about as tense as watching a bunch of people do a word search can be, I guess, and they all remain fairly close throughout. Amber gets all the words before anyone else by a good margin, and there has been a lot of speculation that she threw this challenge, planning to let Rob take immunity unless somebody else came up close to taking it. And indeed, she allows Rob to pass her, and he unscrambles the secret word -- which is "Chaboga Mogo," and that is so obvious that I am inclined to agree that Amber probably let it go. It's a risky move, but in a way, it is better for Rob to have immunity, because although it's sort of just as good to boot her off, I think the opportunity to get rid of Rob would have been even more enticing, so if she's trying to protect herself and him as a pair, then she probably has a slightly better chance that the rest of them won't rebel against her than that they won't rebel against Rob, just psychologically. She's also friends with Jenna, and might have expected Jenna to hesitate a little over booting her more than Rob. As we saw earlier, Jenna appeared to be ready to boot Rob, after all.
Anyway, Rob takes immunity again. ["Which is funny, because all along I've been saying that the only kind of individual immunity challenge he'd be likely to lose is a spelling contest, and this is almost that and he STILL won, bless him." -- Wing Chun]Jeff gives him the necklace, and the rest stare at him with hate. Deep, abiding hate. Except Amber, who looks at him with lust in her heart, as usual. I love how the immunity necklace is the tackiest piece of jewelry Rob owns by only a very narrow margin.
Back from commercials, we see an army of crabs go tearing across the beach like it's a crowd scene in Godzilla and they've just realized that it's time to evacuate downtown. As the tribe returns to camp, Rupert says that he wants to "wear that damn necklace one time before we leave." Man, is that true? He hasn't won immunity once? Hee hee. Amber (I think) laughingly accuses Rob of having put a whammy on the necklace to make himself win all the time. Rob interviews simply that while having immunity puts him in a good position, his position is also "precarious," for the obvious reason that he has a lot of power, and the one way he doesn't is if the rest of the group manages to pull it together and take out Amber. He says he's not really sure whether the rest of them get that it works that way. For the moment, he's content to try to "be the diplomat," and he's pondering the choices for a bootee.