Soy oil is listed on the ingredient list of the last batch of Metabolic Drive bars I got from here. Could be you changed ingredients after these were made, doesn't matter now I have 4 boxes that won't go to waste.
Last trip I took around the grocery I noted that almost everything has soy oil in it now. I made an attempt to see if it was possible to cut it out completely, it doesn't look like it. T-Nation writer Mike Roussell even refers to it as the toilet water of oils in his Nutrition Quest artcle. http://www.T-Nation.com/readArticle.do?id=1249295