Actually what happened was Nicklaus won the next year with even par 288.(weather)
a real even par not a USGA cop out par of 280.
Nicklaus used to blast his drive on 18 out into the old practice fairway on the left, which is why they put in those awkward bunkers on the outside of the dogleg and planted trees up the left side. (when players began carrying the bunkers they built the new back tee more recently)
There has been a history of change over the years at ANGC, but with only 1 guy(Nicklaus) bombing it AND winning, (there have always been bombers) it was not seen as a reason to change dramatically, and the committee seemed less concerned with a high winning score-tournaments were WON at Augusta.
Now they engineer it a bit on Sundays with a few funnel pins.
There have always been big hitters, just not so many, and as distances the ball travels, being a long hitter begins to lose its advantage, as fewer and fewer drivers are hit, which is why a 60 year old can compete in a major on a firm links as he can hit drivers where others hit hybrids to the desired areas.