when is inside pick to 2nd a balk?

[Tim C]

"also, i would think the conventional jump pivot pick to second is considered an "outside" move since the proper way to execute it is to turn in the opposite direction"

IF you are saying a "jump turn" to second base (like a jump turn to first base)that move is impossible without balking.

Stand in your office and go through the move. In order to get turned completely and gain direction there "must" be a flex in the legs to perform the "jump". This is the start of the pitching motion and is a balk for failing to complete the pitch.

A jump turn cannot be done legally to second base. It is the law of gravity that is involved.