BUT-- What can possibly happen to the engine, mechanical and/or electrical once you stomp on the brakes so hard it causes the engine to die even tho the engine has been running extremely well before that happened? What can be affected?

Can it cause any sort of “vacuum” momentarily by things moving or “sloshing“, that can affect any sensor, even in the gas tank, even if it's just for a moment? Im talking about a VERY hard/fast stop from 20 mph to a dead stop as if hitting a brick wall, but with the brakes. Oh, there was also a very slight veer to the left when the fast stop took place.

Thanks for your speculations- if u have any.