Have you asked clikpic, i'm sure they'd be able to give you the best advice.
In terms of actually removing it from the web, surely once it's there its there, deleting all the content from the site and making it live again would in time do something towards getting the content of it off the radar i'd of thought.
Once there's nothing on it i'd of thought google just wouldn't rank it which would drive it into insignificance in the search engines.
You could try changing the name of it to something completely random too i'm sure that'd help you too.
I have to ask why though.