Years ago the last car derailed in the helix, leaving the back car hanging off the track and one person was ejected from the car onto the ground. I dont believe anyone died though, that was in the late 90's, early 00's. I dont remember the cause, I think it may have been a problem with the track vs. a problem with the train, but I dont remember the exact details.
After that it's popularity declined somewhat, and due to maintaince reasons they only ran one train, and it was an overall maintaince headache, and a pretty crappy ride, so they decided to remove it, and it's land sits vacant awaiting future expansion (i realize they built the spinning coaster, but that occupies a extraordinarily small piece of OE's land, and technically that was just queue in that area)

Favorite Wood Coasters: The Voyage, Ravine Flyer II, Thunderhead, Balder
Favorite Steel: Voltron Nevera, Steel Vengeance, Expedition GeForce, Olympia Looping
Parks visited: 232, Coasters Ridden: Steel: 894, Wood: 179, Total: 1073