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Taro,
Here's a great slo-mo of Pineda during a game. Watching it, and pausing the vid right at foot-strike I'm not seeing an extremely elevated elbow.
http://www.youtube.com/watch?v=M8FWE3kKdF4
As a comparison, here's a vid of another power-righty. The two are strikingly close.
http://www.youtube.com/watch?v=n8LDipM5NWk
Lonnie