[Update: Video's gone now. Feel free to post link to mirrors in the comments, if you find any.]
The accident left two guests being treated for injuries and sent to the hospital.
The Department of Safety and Health and Knott's Berry Farm are investigating the accident.
Editor's note: My apologies for not linking the report on this earlier. The accident happened two days ago and was reported almost immediately by a reader to the Accident Watch.
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The video is gone now.
http://www.nbclosangeles.com/news/local-beat/Knotts-Berry-Farm-Rollercoaster-Accident-Injures-Guests-59751017.html
http://www.youtube.com/watch?v=EGJGl4SfKCg&feature=channel
Secondly, I'm not sure if you are completely correct in your understandings of the mechanics of a rocket coaster. At about 13 seconds into the video, if you watch the child's seat, it is jarred abruptly, shifting it to the right, and up. That either implies the integrity of the train is compromised, or that there was a force that caused it move. Did the train roll over the cable perhaps on the return trip?
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