Over and Back

[Dibbs]

How would you call this? In a freshman game last night A1 dribbles up to divsion line and stops with his right foot in the front court and his left foot in the back court and at the same time dribbling the ball in the front court. So
far no problem until the player quickly changes feet, now the left foot goes into the front court and the right foot goes into the back court. It did not look right and the next thing I knew I blew my whistle and called it over and back, but I'am not sure if I got it right? I check with other officials and got differant answers.
This my second year and I have not seen this before. Thanks for the help!