I remember reading that article; I never knew that Tom penned it. How fun!
I'd be shocked if any of them remain untouchable. If they do, just get four guys from the long drivers tour (with their height, fitness and technology intact) and let them have at it.
I will say that the 4th at the Concord Monster will remain untouchable as long as the resort is closed. However, word on the digital street is that financing to reopen the joint as a spa, casino and golf resort has been settled and that work will begin soon in Sullivan County.
Hank Kuehne was on Oak Hill's 13th when he won his US Amateur, so that one is certainly a gonner. I think that pros are routinely on 9 at TPC, too.