ActionScript 3.0 :: Prevent Scaling Of DislayObjectContainer's Child?

My class is extending Sprite and inside i have overwritten width, height, scaleX and scaleY setters and forbidden scaling if scalable property is set to false. When i test this (put it on the stage and try scaling using these methods) it works fine. However if I add it as a child of some other DisplayObjectContainer and scale it my object is scaled too. Are there other public scaling methods that I could overwrite and that I am unaware of? If not, how could I achieve this effect without overwriting it's parent container's scaling methods?