It seems impossible (with sophisticated Nav systems) that we have a modern day "Wrong Way Corrigan."

Douglas Corrigan (January 22, 1907 – December 9, 1995) was an American aviator born in Galveston, Texas. He was nicknamed "Wrong Way" in 1938. After a transcontinental flight from Long Beach, California, to New York, he flew from Floyd Bennett Field in Brooklyn, New York, to Ireland, though his flight plan was filed to return to Long Beach. He claimed his unauthorized flight was due to a navigational error, caused by heavy cloud cover that obscured landmarks and low-light conditions, causing him to misread his compass.

The 777 was supposed to fly about 2,500 miles NE and it looks like it may have flown 2,500 miles SW.