It's pretty damning evidence that it's entirely Uceny's fault. She kicks the Ethiopian runner, who is off to the left and behind, with her left foot. Uceny's left foot bounces of the Ethiopian's thigh, and into Uceny's own right calf, causing her to fall, and Uceny almost takes out the Kenyan and the Ethiopian runner.
Nobody clipped Uceny's heel or any of that nonsense. She literally kicked herself in the calf and fell down.
STOP COPY PASTING YOUR SHITTY INTERPRETATION INTO EVERY THREAD.