If your question is should he have been disqualified, I would say that depends on tire smoke.

No tire smoke I would say he is golden.

If there is tire smoke enforcement is all over the map.

I remember one the the Emmons brothers being disqualified for rather modest tire smoke but after at least one warning.

I also remember one of Dan Fletcher's sons completely looping a Camero after excessive braking and I think all he got was an "ata boy". However I don't remember if he actually one the race, but I think he did.