Track accident
I believe he probably did have his foot on the gas and when the car launched he may have put it on the floor. He had his hands full, did a good job driving the car and was lucky.
When my engine is warm it won't start if you don't open the throttle. If you don't have a nss on youre car please put one on it. You owe it to the other competitors, spectators and yourself. They rarely fail on older cars. If you are worried about youre engine not cranking wire a back up toggle switch with a protective cover to bypass the nss if it were to fail.