If you really wanted to remain anonymous you would have to withhold your name, use a free domain and never work in your home or school/work place, it would have to be an internet cafe.
Several of them infact cause they would be able to track it down and find you
That would pretty much be the only way to carry on with a fan project thats been asked to be stoped...unless your were a hacker and had some other methods of masking your identity