Which year was the goalie who had the most postseaon shots Against in 2008 born?
the most postseason shots Against refers to max(PostSA); year born refers to birthYear
SELECT T1.birthYear FROM Master AS T1 INNER JOIN Goalies AS T2 ON T1.playerID = T2.playerID WHERE T2.year = 2008 ORDER BY T2.PostSA DESC LIMIT 1