Balk or No Balk

[jumpmaster]

OBR Rules

Is this a balk?
Babe Ruth 13 year olds. Bases loaded. RH pitcher is in windup position. Pitcher steps with his non-pivot foot across his body towards third and fakes a throw towards third base. I balk him for making a movement towards home.

Rule 8.01 gives 3 things that a pitcher can do from the windup position. One is to throw to a base in an attempt to pick off the runner. I can't figure how a pitcher can throw towards a base in attempt to pick off a runner, without making a move towards home. UNLESS, he disengages the rubber with his pivot foot first. Am I missing the obvious here?

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jumpmaster al