Joel:
A lot of people are afraid to revisit a bad decision.
A lot of the times we've been hired as consulting architects is not long after a previous architect made a major gaffe, such as a green that was too steep. (I recognize that in some instances this is a matter of opinion; but when balls roll back off half the putting surface, it's just too steep.) Even when they know this is the problem, they ask us to write up a complete master plan, and then they want to address all the other stuff before they fix the gaffe.
However, I have heard that logic of being "too far down the road" innumberable times. People just don't like to admit mistakes, especially mistakes that cost $50,000 and a disruption in play.