While I haven't thought about the winds blowing downward theory, it does bear some serious thought.
I do know however that there has been research into the Hardwood species taking some of the "wind" out of hurricanes. Specifically the large friendship-type live oak trees. Many were stripped bare of their leaves in Camille and other storms here on the MS Gulf Coast. They lost a few limbs and branches, but no major damage. You may lookup Dr Chris Landsea at the Hurricane Research Division. His group has done extensive research into landfalling hurricanes, and may be of some assistance. Ricreig may be able to give you some info on Camille as he was stationed at Keesler AFB.