My first candidate was True Blue...glad that I am in good company with Wade. Strantz sometimes built those all-or-nothing closers (probably) at the behest of the owner. Caledonia has one as well, and I believe that Royal New Kent also has one. They are so out of character with his approach to gca.
I believe that the current 17th at Glens Falls was the original 18th. They had a wee par three, across the road, that is no longer there. I agree with John that the par three closer is very unlike a Donald Ross hole.
Pine Needles 18th is very odd to me.
Bethpage Black, for well-known reasons.
I'll leave you with Leatherstocking. It's an amazing golf hole, but it is out of character with the other 17 holes. Actually, 16-18 are out of character with the first 15 holes.