we used to have the devs manually make changes every month or so in the past however since moving to the new login system (stormpath if i remember correctly) it is no longer possible. you could reach out to titillating if you feel the need (community staffer) but he will likely tell you much the same thing.
given that you only have 64 posts, if you hate your name that much you could just unsubscribe, then recreate an account with a name you like. its quite different when you are like us and have thousands of posts..