have you ever tried to ignite gas as it leaves a torch? as velocity increases, the ignited gas (flame) moves further from the nozzle. since he was inside the cabin, it simulates being inside the nozzle. at high pressure (i assume high because he lost his hearing so it must be a very high pressure), the gas that was ignited was probably outside of the vehicle itself because of pressure release and the velocity of the gas escaping the cabin itself. once it is in the open atmosphere, it decompresses drastically and burns up very fast.