Balk?

[zm1283]

Bob - It is very odd looking. His pivot foot pivots and his heel moves toward home plate as his leg kick is beginning.

David - It is part of his pitching motion, and he does keep in contact with the rubber. I was sure it was not a balk when he went to the plate. He never did it when he picked to first, but did do it when he picked to second with the inside or "wheel" move, but he still gained distance and direction with his non-pivot foot. Would you guys balk it when he picks to second?