This director does not really exist. Alan Smithee is a well-known pseudonym used by any director who -- for one reason or another -- decides they no longer wish to be officially credited for a specific work.
It should be noted that although the moniker has been mainly used by directors, it has also occasionally been worn by other technicians, especially within the feature film industry.
For more information, check out IMDb's entry. Note: don't get too excited about that bio they use, it's meant as a joke (as is obvious if you read the whole thing carefully).