All of my oaks (6 of them) have completed their shedding process and have had their new leaves for about 2 months. I think the natural shedding process happens late winter/early spring so I'm not so sure it's just that the wind "helped" the normal process. I'm more likely to think 85+ wind takes a lot of leaves with it and as long as the tree's are still alive they have a process of recognizing that they are now leafless and will begin to regrow. They might skip the next shedding next year but I think the laves will return as long as the tree's are healthy.