Even if it had been the whole trailer looped 100 times it is utter stupid to take it down. The purpose of a trailer is advertising plain and simple: the more it is seen around the more audience it attracts to the real show. CBS shot their own foot on this one.
If it's a review, and you'd rather people see different reviews of your show, and you can get youtube to remove it based on using a few seconds of your footage, though...
