You would have to buy it from someone who stocks Artyarns patterns. I'm on the multidirectional mailing list, and I think this was in an old IK or creative knitting magazine a couple years ago. Lessee, these are some of the online shops -
Check one of your LYSs to see if they carry them too.
Ohhh, it may be her book on multidirectional knitting, too.