Balk again??

[officialtony]

JV game. Runner at 2nd. Pitching from the set position. the pitcher lifts his left leg and turns his body to 2nd base and leans at the runner and pauses just for a snitch and then comes to the plate. This is a hard one to describe but his body and leg do go towards 2nd a bit and he does pause ever so slightly and then turns to deliver the pitch. What bothers me is the discernible pause and the left leg and body leaning toward 2nd before he comes to the plate. With this little bit of information could I get an opinion as to a balk or what to look for to make sure this is/isn't a balk?
Thanks in advance.