Judging criteria for tie breaker problem

How is tie breaker problem judged after the end of the contest.
Are all correct answers rejudged or only the best one or only the last one…?

According to http://blog.codechef.com/2013/10/03/challenge-problem-scoring-changes/ all submissions should get rejudged. (At least, that is what I implied!)

Look for the replies to this comment: http://blog.codechef.com/2013/10/03/challenge-problem-scoring-changes/#comment-1068878953