Thanks for the comments. Looking at the video again, the wind definitely changed direction as I got below 500 feet, swung from left to right. I guess I had set that in the global weather without noticing, it really took me unawares but I decided to go for it anyway. However, the windsock is pointing the opposite direction to the wind, very confusing.
Here is the .stg file for all the buildings:
http://dl.dropbox.com/u/1527486/2232515.stg
mostly I used generic models but there are a few from Project Icejaw, just comment them out if you don't want to use them. Just go to Data/Scenery/Objects/w050s30/w044s23 and back up your existing 2232515.stg and replace it with this. It points to objects in Data/Scenery/Models. Also you will need Statto's Rio Scenery so they appear in the right place.