Rolling Thunder

8/16/1981 - An employee at Six Flags Great Adventure is killed when he falls from Rolling Thunder during a morning test ride

How the Heck did that happen?

Not the way he planned it, I would assume ;)

He realized how horrible the coaster was and decided to jump off rather than endure the torture...

Oh wait the date was 1981... ;)

I believe he tried standing up or was goofing around with the restraints somehow. At least that's what I've heard.

I believe he stood up as well.