I don't know, sic. The end user can turn IK on or off, so it's probably irrelevant to art's plan to distribute his single morph. I suppose we've moved beyond the old days, when a guy could just zip a stripped obj file and post it as a morph. Now the geeks have taken over and everybody is expected to put up all kinds of injection packages. What used to be an artists' tool in the late 80s and early 90s is now a geek's paradise of arcane acronyms and undocumented add-ons.