Brian
Yes I think you're right, Colt did shift the green up onto the knoll. Park had the green just beyond the bunkers and a bit further right.
I read an interesting article where Max Behr criticises this hole, I can't remember the details, but it was to do with the bunkers. There was a riposte from Colt's partner John Morrison. Maybe I'll dig it up sometime and repost this thread with it included at a later date.