unload an swf with out worrying that its leaked memory?

Hi I have a desktop air application that loads swfs in and the unloads them after use.

I use the Loader class to load them in...

My oncomplete method looks like this..

public function onCompleteHandler(loadEvent:Event){


cliploaded = loadEvent.currentTarget.content


mcToLoadaddTo.addChild(loadEvent.currentTarget.content);


cliploaded.iniz();



}

On load complete i then start the code in the swf by calling iniz method that I have in it.

Currently when it comes to unloading the clip, to stop memory leaks I call A cleanup method in the swf before I unload....

if(cliploaded != null){



cliploaded.cleanup();
mcToLoadaddTo.removeChild(cliploaded);



cliploaded = null;



}

Is there a means to load a clip where I would not have to worry about nulling everything within the loaded swf?

Thanks

Aidan