? It looked like a private pilot making his first crosswind landing.
He needed to use the rudder to straighten out, and put it on the ground!
Have you flown a 777 300ER? I'm guessing not. The recommended Boeing method during a strong crosswind >30kts is to maintain the crab until just prior to touchdown. So you actually start your flare and then about 10 feet above the ground you straighten out the aircraft for touchdown. It can be extremely tricky during gusty conditions. BHX is one of the shortest runways for EK 777 ops. They were probably at MLW (about 550,000lbs) landing on a 2,600m, potentially wet runway.
Looks like they did a very good job and kept the ops safe.
KyBrownBourbn
Just an FYI. The majority of EK pilots are European, British, or North American. Many ex BA, Air Canada, etc, etc.