Wambou
As you said, it’s probably because the manager left the league before the end.
You only see managers currently in the league in the standings.
Drivers are kept in and if the manager rejoins, he/she gets its points back (I think there is some rules for that, like depending how long he/she left).
If you track the driver, then the manager and check his/hers stats, you can know if he/she left the league before the end of the season.
I think if you transpose that to real life, the team leaves, so it should not stay in the standings, but drivers can rejoin for another team, hence the fact they are still up for the title.
For sure he left before the end... 27 GP for 2 seasons (s7 14 GP, s8 13 GP, but not till the end....).
If he was ranked 4th, 5th, no problem... But in that case, he is the "champion"...
4 GP to race.... 43 points / GP, total 172....
Let's just admit that JS31 wins the 4 GP's and get this 172 pts.... total : 514 pts. That means he had 342pts when FIA left with his 539 pts....
It's like if Romain Grosjean leads a race with his fucking Haas (^^) 2 laps before the other, and crash (as usual ^^) on last turn... 1st +2 laps -> last ?
That gets me crazy ^^