Nope.
On the one hand the ITC regulations say that on the comment should never have been broadcast, however if they had silenced it out we would never have known he was making such offensive remarks. There is little that the producers can do to stop the HMs talking about what they want, they can blank out certain parts of the conversations, and they can make talking directly about the nominations against the rules, but apart from that they have to leave the housemates to be themselves, no matter how dispicable that may be.