That means that although it swerved you shouldn't expect wild giration on that piece of grass. Beleive me that is a short distance for an MD80 travellen in excess of 100 knots. Probably a quick swerve and correction before going down the edge. I guestimate he wasn't on there for more than 5 or 6 seconds.
Xander
How does one command an aircraft to swerve like that?