Remove Ability for Administrators to Delete Administrators

I’ve been studying roles and capabilities and have worked with and worked up a bunch of awesome code for creating unique capabilities and roles. I have created a “Master Editor” role to maintain users with almost every capability…
However, edit_users & delete_users obviously allows for an editor to CUD users, including the existing administrators…

tag search using WP_Query

I need to find only posts with a tag forest gump. I’ve tried: new WP_Query('tag=forest+gump');, new WP_Query('tag=forest gump');. However they both return ALL the posts and not only the posts with forest gump tag. Single tags (without spaces) work fine, though. Alternatives (like plain SQL) will work as well.

Remove navigation from header in custom page template

I’m building a landing page and want to remove the navigation menu from the page. The navigation menu is in header.php which is of course in the page template. Is there a WordPress function I can use to remove the navigation menu from this specific page? I know I could do it with jQuery and do display:none for the nav menu but i’d like to do it server side before the page loads.