I thought I knew this

[Jake80]

I thought I had this rule interpretation and terminology correct but was questioned about it so I am going to ask.

1. R1. Right handed pitcher comes set after the stretch. He hops in the air and while in the air turns so when he lands his pivot foot is behind the rubber and pointing toward home and nonpivot toward first base. While he was in the air he seperated his hands and landed with right arm back ready to throw. He never released the ball and I called a balk. Coach argues that this is a legal disengangement. I have always thought that the step must be directly back and the pivot foot must land before the hands seperate to be a legal disengagement before faking a throw to first. Is this correct?

2. I referred to the above move as a jump turn. Coache's idea of a jump turn is a hop off the rubber with the pivot foot landing in front of the rubber and the non-pivot foot behind the rubber. Is my terminology correct? Thanks for any feedback.