Bug with removing a user

Ive discovered a bug removing a user with the cvs version i was told to 
get, if i do

$lu->admin->removeUser(array('perm_user_id'=>1));

Here is the error i get

Pear Errors with the system
Info: MDB2 Error: syntax error
  [Last query: UPDATE liveuser_groups SET
  = NULL]

In the complex method removeUser

  $data = array('owner_user_id' => null);
         $filter = array('owner_user_id' => $filters['perm_user_id']);
         $result = $this->updateGroup($data, $filter);
         if ($result === false) {
             return false;
         }

Why is it trying to update the groups ? There is no updateGroup method 
in complex anyway.

Also how do i make removeUser also remove the area and user rights ??