Balk or not? FED

[jicecone]

"During these preliminary motions and during the set position until a delivery motion occurs, the pitcher may turn on his pivot foot or lift it in a jump turn to step with the non-pivot foot toward a base while throwing or feinting as outlined in 6-2-4 and 2-28-5, or he may lift his pivot foot in a step backward off the pitcher's plate which must be in or partially within the 24-inch length of the pitcher's plate"

In your thread, the pitcher did exactly what the rule allows him to do, so why would you say it is NOT legal.