Maybe the Cookout deserve more credit for how much they've got the game under control but the three powers turned out not to be disruptive at all. Claire is playing Tiffany's game for her, and taking out her own shot of being HoH next week, whilst Alyssa and Sarah Beth are just as oblivious to how Xavier and Kyland are controlling their fate. Ultimately they got to this stage where anyone winning any kind of power is almost irrelevant.
I would guess they'll be some kind of endurance comp this week as they'll need it for the Sunday show, plus Claire has to "throw" the comp to maintain her secret role as HoH which maked her inelligible next week, although would love to see them mess it up somehow so she ends up winning as all the others slip up before she has chance to throw it.
We then know it'll be a single the next week (9/9) followed by the badly timed triple the following week (16/9). There is also a show on the 17th due to the Emmys airing on the Sunday, with the F4 eviction on the 23rd and the finale on the 29th. If they've any sense they'd bring forward one of those evictions from the triple a week to give us a week of final 6 action, even if they then did the triple as planned the following week but add a battle back competition with those three to take the numbers back up to 4.