I'm finding it really difficult to reconcile what I see with your judgment and meticulous verification, which I wholeheartedly trust. The trajectory of the car just looks so much like it was caused by a wall touch, and the sound seems to match, but setting the screen display to normal (rather than simple) would definitely help.
I also have my lap. There are some painfully obvious errors - Adenaur Forst was absolutely atrocious, and I nearly threw away the lap right at the end by carelessly taking the last corner too fast, causing the grass to shoot the car rightwards - but they definitely don't add to the huge difference needed to overtake stidriver.