As she advances her left leg, she loses her balance and pitches forward.
HeWhoPostsStuff: Misato: "No! Wait! Stop! Dammit, who put that banana peel right in front of the launch area?"
Reichu: That would have to be one hell of a banana peel!
HeWhoPostsStuff: Nah, a regular ol' banana peel can disorient absolutely ANYthing in an animated world. In fact, seeing as NGE takes place within just such a world, I wonder why Nerv didn't pick up on this… Forget all the useless gun emplacements and mines, if you really want to stop the Angels, put out banana peels and marbles. And forget N2 bombs, drop anvils! The image of Sachiel pulling out and opening up one of those tiny little umbrellas right before he gets hit would alone be worth the effort, methinks.
Reichu: For the longest time I thought that, here, it looked like Shogouki tripped over the umbilical cable. But on closer inspection, it really is just a matter of Shinji losing balance… "Shinji, you must be one with the Eva's inner ears!"