Kind of, 2 weeks after you "deleted" it, they deactivate it, it can't be seen or be searched anymore afaic. It never gets really deleted though, once you login again, it is active again, so it remains on their servers.
Btw, i would like to see the option on TUS, that you can deactivate your account too. A simple option in the user control panel would be enough. That way fake reports against inactive players who didn't visit TUS site for a long time could be avoided too.