If it was cached, it should expire shortly; we use a caching system which will basically make a copy of every file accessed so it can be served quicker, but the cache does have a time-limit to anything added to it. Same reason why updating a stylesheet takes a few minutes to update.
I don't have the exact link but when checking the site just now, it does display the contents of your public_html, and no zip file is listed; based on that, the cache may already have expired.