Auto x guys: Really need help, Tell me about a "technique' Options

[aircooledboy]

We have a case in my office were there is some question as to why a driver did something in an accident, and I really need to understand it.

The reconstruction has been completed and it appears that one of the cars in this "aggressive driving" scenario lost control during a maneuver wherein he applied the emergency brake on rear wheel drive car (late model Saleen Mustang) at about 80 mph while passing in tight traffic.

Can anybody tell me if here is some legit (or illegit for that matter) driving technique which would explain that?

Thanks

[TargaToy]

As a younger and dumber driver, i have on occasion used only the p-brake to scrub off speed without showing brake lights after discovering i had just passed a trooper going a bit fast. But the thumb button was always depressed at the time and i didnt lock up the rears.

Is it possible this was a downshift error that locked the rears and the p-brake wasnt the actual culprit?

[aircooledboy]

Is it possible this was a downshift error that locked the rears and the p-brake wasnt the actual culprit?

Always been one of my leading theories. Car is a manual trans. Unfortunately Ford's black box data apparently doesn't include gear selection or clutch inputs.

I'm asking about possible techniques that might explain this because the driver suffered a severe head injury as well, so he can't tell us what happened, and we don't want to get blindsided at trial with some street racer explanation for this that we hadn't considered.