Yeah, that guy probably doesn't know a thing about cars.. that sucks what happened though.
I've had a throttle stick on me before, it's not very enjoyable.. I shut the engine off and braked (It was a '70 Bug, so no power steering or power brakes).. I had some linkage issue.
I have had an occasion where I had something happen to me and I panicked though. Don't ask me how, but when I was driving, my shoelace got caught around the clutch pedal, and so I couldn't get my foot onto the clutch.
People ahead were stopping and I panicked.. I stopped the car with it in gear, it stalled and jerked forward, bumping the car ahead of me. There was no damage, but I got lucky, heh. If I didn't panic (I was like 16-17), I could've either just jammed it into neutral, or just yanked my foot off the clutch pedal or something.. shoelaces aren't THAT strong.
I felt like a moron afterwards.