Actionscript: Crossdomain issue when loading Twitter user icons

When building a new Flash piece, I ran into a crossdomain issue when trying to load the user icon images that come back from the Twitter API. After some searching, I found that by replacing the root of the url, the crossdomain issues are easily solved. Check it out:

var thumbnail:String = "http://s3.amazonaws.com/twitter_production/profile_images/252274568/profile_image_normal.jpg";
thumbnail = thumbnail.replace(/http:\/\/s3.amazonaws.com\/twitter_production\//g, 'http://twitter_production.s3.amazonaws.com/');

I was surprised it was this easy, but by moving the "twitter_production" portion of the path to the front of the subdomain, you now get a good crossdomain.xml here: http://twitter_production.s3.amazonaws.com/crossdomain.xml