First of all there is really no such thing as a moving screen. The term has nothing to do with an illegal screen or not. You can have a still screener and the screen can be illegal. That is just a pet peeve of mine, ignore my comments.
As a general philosophy I do not reward players being screened with fouls when they decide to not run thru the screen or stop and change direction. There has to be (in my way of thinking) some kind of displacement. If there is just "touching" I do not have a foul. I was not at your game to decide what really was illegal. If there was contact and you feel it was enough for a foul, then maybe you should have called it. That is after all why we get paid the big bucks.
Peace