ActionScript 3.0 :: Removing The Attached Movieclips?

I'm creating a highscore list like this:

code: function loaderCompleteHandler(e:Event):void {
var scoreXML:XML=new XML(e.target.data);
var playerResult:MovieClip;

[code]....

I have a MovieClip with the linkage name of "playerResult" in the library. For every loop it takes the scores+names from the xml and displays them by creating a new instance of "playerResult" and attaches them one by one under each other.I need to be able to remove this highscore when it's not longer needed, thus (the most important part) freeing up memory. So I can then use the same code to show the scores again without doubling the memory it uses every time.

code: function loaderCompleteHandler(e:Event):void {
var scoreXML:XML=new XML(e.target.data);
var playerResult:MovieClip;

[code]....

... so I now have a name for each instance (playerResult0, playerResult1...) but still can't come up with a way to remove them.

The scores are displayed like this:

1 name score
2 name score
etc...