CSS trick..
<style type="text/css">
.footer {
display: none;
}
</style>
Place the above in the template you do not want the footer to show. Then edit ubbt_footer.tmpl as follows
<span class="footer">
$tbopen
<tr>
<td class="darktable">
<table border="0" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td align="left">
$contactlink
{$template['privacy_statement']}
</td>
<td align="right">
<a href="{$config['homeurl']}">{$config['urltitle']}</a>
</td>
</tr>
</table>
</td>
</tr>
$tbclose
</span>
Viola, it's gonzo.. I remove the menubar on my site this way. Remember NOT to blank out the copyright, that is not permitted.