I taught the class. Later I renamed the pattern "Equilibrium" and submitted it to Interweave Press for Knitscene Accessories 2012, where it was accepted(!), which you can read about here.
But I never did get that tutorial together. I
The topic is "Two-Handed Stranded Colorwork" which is really a lot to say at one time. You should know that most stranded colorwork, also referred to by some as, "Fair Isle", involves working rows with two, and no more than two, colors at a time.
At some point in the history of this kind of knitting, someone thought that it might be a good idea to work with the two strands of yarn with one hand holding each color.
Here is how you might hold the work on a two color row.
The actual "Two-Handed Stranded Colorwork Tutorial" (without a preface) will be my very next post. It will begin with this photo. Look for it in a day or two.