So I went yesterday and I rode Vortex twice in the 2nd to last seat (Can't fit in the back of the cars, legs are too long:P ). The second time, during the second to last loop, I saw a lot of black and next thing I knew the sudden stopping at the end of the ride woke me up.... wtf? And later I rode Face Off, walked on to the very front, and I remembered the leg stiffening trick and tried it. I couldn't squeeze my butt cheeks because of the way the seats are, but I only saw a little bit of black on the boomerang... and this was all at night when I hadn't eaten anything. The last thing was Chipotle at 11:30. Maybe that was the problem?