You can change it here:
function post_meta_who($post, $class)
there You move this part above the "who" "data" part
if (isset($post['who']['title']))
$this->output('<SPAN CLASS="'.$class.'-who-title">'.$post['who']['title'].'</SPAN>');
EDIT:
the complete function:
function post_meta_who($post, $class)
{
if (isset($post['who'])) {
$this->output('<SPAN CLASS="'.$class.'-who">');
if (strlen(@$post['who']['prefix']))
$this->output('<SPAN CLASS="'.$class.'-who-pad">'.$post['who']['prefix'].'</SPAN>');
if (isset($post['who']['title']))
$this->output('<SPAN CLASS="'.$class.'-who-title">'.$post['who']['title'].'</SPAN>');
if (isset($post['who']['data']))
$this->output('<SPAN CLASS="'.$class.'-who-data">'.$post['who']['data'].'</SPAN>');
if (isset($post['who']['points'])) {
$post['who']['points']['prefix']='('.$post['who']['points']['prefix'];
$post['who']['points']['suffix'].=')';
$this->output_split($post['who']['points'], $class.'-who-points');
}
if (strlen(@$post['who']['suffix']))
$this->output('<SPAN CLASS="'.$class.'-who-pad">'.$post['who']['suffix'].'</SPAN>');
$this->output('</SPAN>');
}
}