A couple years ago I had a similar incident:

I was running 4th and we had just taken the white flag. The 1st and 2nd place cars were racing into turn 1 and took each other out collecting the 3rd place car. I avoided the wreck and was the first to the checkered. They decided the race was completed when the white flag was thrown so they gave the 3 wrecked cars their white flag spots and I finished 4th. BS in my opinion.