Sports announcers in the US have started using "untracked" instead of "on track" over the last few years, as in, "The Dallas Cowboys need to get their offense untracked quickly if they're going to have any chance to win this game."
No, genius, I always think, if their offense is not playing well, like a train riding off the tracks, then it's already "untracked," and needs to get back "on track."
It makes me sad that Troy Aikman, the Super Bowl-winning quarterback of the Dallas Cowboys, makes this mistake often.