Hello Mike,
thanks for the idea with the filter, works fine!
Example:
add_filter('list_terms_exclusions','my_list_terms_exclusions');
function my_list_terms_exclusions($args) {
$where = " AND t.slug NOT IN ('2005','2006','2007','2008')";
//$where = " AND t.slug not like ('eid-%-%-2008')";
//$where = " ";
return $where;
}