Jeff,
I have been the guy on the other end of the question, albeit it with slightly lower numbers for both master plan and CD's.
On smaller projects, many clubs find it tough to shell out for full fare drawings. Naturally, the club is going to question the cost of construction documents, and many times they decide to wing it without the architect, going only on his/her master plan.
Don't ask me how I know this
I suppose the value of the construction documents would depend on a few things. Could you save the architects fee through lower prices via competitive bid, careful evaluation of the contractors work beyond your ability to monitor, or the cost of just one or a few mistakes by his greater involvement? In many cases, it is a worthwhile gamble for a club to simply pay a premium to a well known contractor and hope for the best, with more limited role of the golf course architect.
Then, there is the question of whether you need documentation for authorities, ie an architect verifying that ADA regulations have been met, for instance, or that flood plain storage is acheived. The large fee is really for the architect to take control of the project on the club's behalf. You don't say it, but I assume the fee also includes bids and construction evaluation and administration.
From the sounds of your case, it sounds like you(they?) may be best off negotiating with the architect for some service limitations, wing it a bit more, and take more responsibility for many items, but keep him involved. Rarely do contractors, or even superintendents have the broad perspective necessary to make snap field decisions, and its worth having an architect in some capacity.
Of course, I have seen clubs do this, and it turns out that instead of one person in charge, there are several, which is worse than none at all!