Chances are the groundskeepers are not included in the lock-out program. As silly as that seems. But remember, the groundskeepers were not working on the ride, they were working under it, and any of us who have actually seen wood coasters already know that virtually all of the space under a wood coaster is reasonably safe even when the ride is operating. Even the area where the guy was working would have been safe had he not poked his head up between the track ties.
Which is why I re-iterate my comment from
http://www.coasterbuzz.com/news/news.asp?NewsID=2203 . While having the groundskeepers lockout the ride would have prevented the incident, a more practical solution might have been a physical barrier beneath the track to prevent anyone from getting into a hazardous position, thus making a lockout unnecessary for people working under the ride.
--Dave Althoff, Jr.