I can confirm from this point on that when the Iloilo leg began, there were 5 teams left, the first three being AJ/Jody, JP/Kelvin and Vince/Ed. Roch/Ejji are also in the top 5 based in the trailer that I saw.
The only two I can't confirm are Matt/Phoebe and Jet/Yna, Matt and Phoebe because a lot people say they made it to the top 5, and because of the different forums that I've read of course. Jet and Yna because when I asked around a lot of bystanders, they said there was a green team, and green is usually Jet/Yna color scheme, and I hardly associate it with Matt and Phoebe because they always wear black and red, their usual color scheme.
Conclusion, somewhere between leg 6 and 7, either Matt/Phoebe or Jet/Yna got the boot and never made it to Iloilo