I think a pilot just has to come into the landing zone as linearly as possible. Momentum should then allow the plane to slide straight upon landing. This plan appears to have found a flat, likely paved stretch of ground (looks like a roadway if I had to guess). Most emergency landing sites aren't so luxurious. Other factors which can wreak havoc on an emergency landing are winds, especially if they are strong and perpendicular to the landing direction. Also, most large aircraft (unsure if this aircraft has it) have the capability to reverse thrust. A pilot can control the direction of the plane during an emergency descent by throttling or choking or reverse throttling the engines (they can be throttled or choked or reverse throttled individually, even if they have only one working engine, which allows aircraft to turn and make adjustments during an emergency landing). Lastly, pilots can operate the wing flaps on either side in order to steer during landing. Bear in mind that every aircraft differs from another; I am simply sharing what I know to be true about the majority of aircraft.