In any case, please educamate me on what causes a slice, because as an engineer, I look at things pretty logically. And logically, I don't see how you slice the ball if the club face is not open at impact. The one exception I can envision is an extreme outside-in swing plane might impart enough side-spin to partially overcome a pull shot, but I have a hard time believing even that. I am sure that there have been plenty of studies done on ball flight using mechanical swing machines, so please enlighten me.
Google "ball flight laws" and click the first link you get. You'll end up back at this site, but go for it.
You'll find that "an extreme outside-in swing plane" does not result in a "pull" by itself. Go ahead... read... we'll wait.
The auditions were a sham. Of the three finalists, only one actually submitted a video, and it appeared on the site about two minutes before the contest ended. Additionally, Martin Hall (and the others) were not "new" instructors - Martin's been on Golf Channel (and lives nearby) over a hundred times.