Sam,
My guess is that a land planner or likely another golf course architect created the plan for permitting reasons not under C&C's direction or it is the old abandoned golf course redrawn.
Here is what looks different from a C&C built golf course:
They usually aren't boxed into a site, in entirety
No discernable triangles or tacking
The green shapes look modern or to have artificial amoeba type lines
The fairway lines look swoopy which is indicative of mounding
Fairways are too skinny in spots
Bunkering is on the perimeters of holes not cutting into fairways
5 double fairway holes???
They don't create digital plans
Or their routings usually look more like this:
Cheers