I just wrote this quick plugin and it seems to work. Let me know if there is a better way.
  

    <?
    
    /*
    Plugin Name: Theme Switch if Admin
    Description: Display different theme to user if logged in as admin
    Author: Kyle Barber
    */
        add_filter('template', 'change_theme');
        add_filter('option_template', 'change_theme');
        add_filter('option_stylesheet', 'change_theme');
        function change_theme($theme) {
        	if ( current_user_can('manage_options') ) {
        		$theme = 'twentyeleven';
        	}
        
        	return $theme;
        }
    
    ?>