Ihg,
As I stated in a previous post, the last 100 feet of a crosswind landing can be very challenging. During a crosswind landing, the airport layout can come into play. If there are tall buildings, terminals, hangars, or even tall trees adjacent to the runway, the air can become quite unstable. If you've ever driven across a suspension bridge during high sidewinds, notice how unstable your car becomes when it passes the main support beams that block the airflow. In the video the aircraft appears to be fairly stable and tracking the centerline until just about 100 feet. The drift appears to accelerate, there's a correction back to centerline and then during the flare everything starts to go south. Unfortunately, at that point things are happening fast and you only have a few seconds to make a decision. Fortunately, for all involved, everybody walked away.