I was in an accident, knew it was going to happen, and braced myself. When it was all over, there was a loud noise, and I realized my foot was braced on the accelerator. Since the car had started to roll when I braced myself, this had little bearing on the accident. Also, this driver wasn't in a state where he was bracing for an accident, but he may have jammed his foot on the pedal when he woke up.

Accelerator / brake pedals have multiple redundant calculations that all happen to combat people saying its a sensor issue, or at least in cars that log that kinda thing, which a Tesla does.

Its such a common accusation that is almost never true, so they've done things like that to protect against it.

It could have been some other object. It's possible that his foot or leg did land on the accelerator in the crash too.