Well that was an unsatisfying episode - and so will the next few be if Sanapu just carry on picking off Vavau. They really didn't help themselves though by not voting together - and they really should have spotted voting Nick was the opportunity to flip the vote, not Matt, and also made more effort to align with the former Aganoa members. Conner probably could have had a convo with Sam in front of Brook about voting Nick and even possibly got two votes for the price of one there. At least by making it about voting out someone else, someone Brook isn't too attached too, he'd have got a message to Sam without making it about just saving himself, and then could have relayed a plan to evict Nick back to Kate, Sue, Kristie and Kylie. Heck, even without Sam that could have been the move worth playing.
Although worth noting they're already at 30+ days on this, so have been away from home almost as long as those who do the full US version are.
P.S. Nice now that Pheobe has gone that Flick has stepped up as somebody I'll love to hate.