While I'm somewhat skeptical that this is an enforceable patent, I actually like the outside of the box thinking. Obviously certain issues would have to be worked out (safety being a key one others have missed), and an architect would certainly be LIMITED in what he could do (and really be ready to move some dirt), I don't think the idea REQUIRES bad architecture. Assuming the course is not private (not sure pace of play is an issue with private courses), it could also lead to a pricing structure for a round of golf that is based on time rather than rounds.
By taking away our "linear" view of a course routing, one can avoid bottlenecks and increase flow during peak hours. For a lot of places in metropolitan areas, this would certainly be a big draw. If someone tried something like this in DC, I'd probably give it a whirl.