After removeChild, object behave like its still exists


I have strange problem. I remove sprite object from container and its not visible anymore but still behaves like its existing.

here is how i add object to container:

var index:uint = worktops.objects.length;
                if (index==0) index++;
                worktops.objects[index] = new Sprite();
                worktops.createObject(worktops.objects[index], index, iUI.inputData[2]*scale, iUI.inputData[3]*scale);

and here is how i remove it:

for( var j:uint = 0; j < objects[selectedIdx].numChildren; j++){
                objects[selectedIdx].removeEventListener(MouseEvent.CLICK, objectClicked);
                objects[selectedIdx].removeEventListener(MouseEvent.MOUSE_DOWN, startMoveObject);
                objects[selectedIdx].filters = [];

Strange thing is that after removing child (embeded text)from object the child still has a parent (bolded part of code). Why is it like this?

I think that all listeners and vars has been removed from the object but probably not because GC does not remove the object comepletly. Why object is still at its place ? Is there easy way to check what has to be removed from object so GC can collect it?

PS Putting null,undefined or deleting object does not solve problem here.