Let's get one thing straight. The most unfortunate sports broadcasting development over the last ten years is not Fox's glowing hockey puck, Fox's robot that "warms up" during sponsorship breaks, or Fox's insistence that Tim McCarver and Tony Siragusa are world-class analysts. None of those are as irritating as an announcer telling us that an underperforming player or team needs to "get untracked"
These play-by-play and color men have the best intentions. We know they mean to say "on track." Somewhere along the line, however, it's become acceptable to mangle the phrase into its current incarnation. Common Errors in English explains it this way: "When things begin running smoothly and successfully, they get “on track.” Some people oddly substitute “untracked” for this expression, perhaps thinking that to be “tracked” is to be stuck in a rut."
I don't think that's it. These announcers aren't thinking, "Wow, the Buzzsaw that is the Arizona Cardinals sure is tracked. Dennis Green needs to get them untracked." Most likely, an announcer made the error unwittingly and the director/producer/other guy in the booth didn't offer a correction or call him on it. So each next time someone said "get untracked," there was a bit more precedent for letting it slide. Kind of like Al Michaels describing an injured tailback as "out with a knee."
I can't point an accusatory finger at the first mover for "get untracked," but I wouldn't be surprised if the offending party was a former athlete; therein lies the perfect storm of less-than-comprehensive vocabulary and enough status that nobody will make fun of him. The phenomenon probably began during the time Marv Albert was out of work, because Marv's broadcast partner wouldn't have gotten away with it. Could you imagine how Marv would have responded to Matt Guokas during an NBA on NBC telecast?
Matt: John Starks has yet to get untracked this afternoon.
Marv: Matt, we need to talk this over! That's not what you had in mind!
Anyway, welcome to the site, and here's hoping the name will, in a few years, be as obsolete as a certain ex-Cardinals catcher.