Have been watching, was rooting for Cada, would have liked to see history being made in with the first 2 time winner of the modern era of huge field main events. Especially since he's improved so much since his 1st win 9 years ago. Cada made a couple of ballsy moves to get up to 4th, but unfortunately he lost the flip as you stated above.
About the 10 to 9 handed hand, there have been several points of discussion about it on
2+2,
/r/poker , and a pretty good breakdown about it on
Doug Polk Youtube's channel. Most of the discussion is surrounding Labat's decision to call with the 2nd pair of Kings after Manions shove with AA. It's a super tough spot considering ICM and how nittty Manion has been leading up to the hand. In a hand shown on coverage earlier Manion folded Kings to 2 all ins and showed it to the table. He also reshoved in about 5 seconds, further weighting his range to AA.
The discussions on 2+2 and /r/poker lean toward folding, given that information and given the ICM implications. According to some calcs in those threads, Labat may have costs himself 1 million or more in real money as he would have been in a comfortable spot around 5th in chips in the final 9 with a fold instead of 9th with the short stack. However in real time it's a hard decision to make. If it wasn't the final table of the World Series with the biggest pay jumps people will ever see, Labat would be fist pump shoving it in.
In his analysis Polk advocates for always calling there because you in tourneys the bulk of the money is in the top 3, you should be and folding KK preflop for less than 100 big blinds given people's ranges in any tourney is generally wrong.
I'm never folding in any of the online tourneys I regularly play, and in game in Labat's seat I probably call there as well. But it is super tough and interesting spot. Complicating matters is that with Labat's sneaky call he may have leveled himself. At that point he probably feels his hand is severely under represented, if he makes a normal 3bet then gets 4bet then 5bet shoved on, he may fould but I doubt it.
As for the final 3 Cynn has been playing the best as he's been making some good decisions and chipped up without making many hands while Miles and Dyer have taken turns being card racks. Rooting for him to overtake Miles but it will be difficult given his massive chip lead.