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[Kirk Y]

If it's a modification made to your forum that's causing it, installing a new template won't change anything -- it'll look the same regardless.

Try putting this on a new line in your includes/config.php file:

define('DISABLE_HOOKS', true);

Then delete something and see if it's still like that. Because on a stock, straight out of the box vBulletin -- deleting things don't look like what's in your first screenshot.