joshrodgers on "Child Category Exclude"

I am trying to exclude all child categories of a specific category, I found: http://wordpress.org/support/topic/exluding-post-categories-from-query_posts-by-nameslug-with-get_cat_id, which excludes the category, but not the category and it's child categories. How do I tweak this code so that it works for both the category and the child category?

My current code looks like: http://pastebin.com/0n3E62nB

Thanks,
Josh