Best coding practice for an admin login

[eluser]Bramme[/eluser]
little double post to bring this to attention (don't feel like starting up a new topic for every quirck).

Atm I got this in my master view file:

Code:

<?php
$this->load->view('global/adminHeader');
if($this->auth->loggedIn()) {
    $this->load->view($page); // page could be for example admin/guestbook/
} else {
    redirect('/admin/');
}
$this->load->view('global/footer');
?>

but this creates an infinite loop. Is there a way to send the page back to my login form (which is my index function) without creating this infinite loop?
Because if I simply load the login view, I get all sorts of errors because my login form uses validation etc that's not being set in the guestbook function.