Ok. In this case try to do it:

1 - Place your plugin after 'thewire' plugin (via Plugins in Administration)

2 - Add additional hook in your start.php before registering custom action:

elgg_unregister_action('thewire/add', elgg_get_plugins_path() . 'thewire/actions/add.php');

3 - Run 'Flush the caches'

ahhhhh... ok I will give that a try.

That worked.. thanks.. gotta remember that part about moving up the plugin.

Use Roles plugin.

For Elgg 3 look at these plugins: Roles and Roles UI.

Ask him to clean his browser's caches

I will ask him to do that and also to try another computer to try and isolate things a bit.  Thanks.