Hi, David here.
I just had a look at your video Jon, and I made a bit of a discovery. I saw that the airport terrain was flat right up to the edges. After playing with the settings, I found that this occurs if the "terrain mesh resolution" is set to 38m or higher. I usually have it set to 10m. At any setting lower than 19m, FSX draws little hills around the edges of any raised flatten area. Have a look at the screenshots below to see the effect of changing this setting:

Terrain mesh resolution set to 38m - you must have wondered why runway 32 (the dive off the back of the apron) was oriented in that particular direction.

At 19m resolution a few sharp hills begin to show.

At 10m resolution it becomes obvious why runway 32 is oriented that way!

Finally, at 1m resolution the hills are fully developed and nicely rounded. You can see that I actually placed the VOR on top of a little hill at the end of the main runway.