What if James and Abba didn't lose their passports?
Then Josh & Brent would be last in Moscow 1. Their 4-hour penalty would kill them on the second leg in Moscow.
In the next leg, Abbie & Ryan's missed flight would have killed them, regardless of the U-Turn, and assuming James & Abba just got on the flight with the others.
In Spain, the self driving did put Natalie & Nadiya in last. Just don't know how in would turn out for James & Abba. But I bet they're good drivers. Still, Loire Valley was a toss up, so James & Abba may or may not have reached the Final Three. And if they did, there is a good chance they could have won, give or take Jaymes & James.
Over all, there would have been less drama in the final legs