Disable all Drupal users except Admin via Drush

user_cleanup.php

#!/usr/bin/env drush
<?php
#
# This script removes all drupal users with uid > 1 (e.g., skips
# admin user) and reassigns their content to anonymous.
#

// check if we can bootstrap
$self = drush_sitealias_get_record('@self');
if (empty($self)) {
  drush_die("I can't bootstrap from the current location.", 0);
}

// we don't want to say yes each time.
drush_set_context('DRUSH_AFFIRMATIVE', TRUE);

$result = db_query("SELECT name from {users} WHERE uid > 1");

foreach ($result as $user) {
  drush_invoke('user-block', array($user->name));
}

glopes, sorry for the delay. by now you've no doubt found your solution, but if not you can take a look at one of the other scripts I wrote here: https://gist.github.com/aaronott/6040509 and perhaps that may help.