Actually its a good question and there is....... the rest. If you'll let it rest 30 mins to 2 hours after coming out of the ice chest, it will help your brisket firm up and cut so much easier. Hot tender brisket can be the pits to slice, and I don't care what they say, if you have pulled brisket you over cooked it! Not that its not good mind you.
I know some folks that throw there's in the reefer to cool 'em down before attempting to slice.
Besides nobody really wants food that is soo hot you can't enjoy the taste, but we will all grab it as soon as its put out, so like a buddy of mine always said, leave it to sit in the kitchen and do your guests a favor.