The menu on the right side is generated dynamically using recordsets and ULs. In order to modify this so that it is not creating an up and down list you would need to edit the code in the CSSMenuWriter > intermediate.php file. You might need to supress the <li></li> so that it only occurs for every fourth item.
This would be a very custom edit of this menu and will require some knowledge of php to get it worked out.