I read the article and I can only find a reference to a nasty left stall. I could not find where the author said the stall strip was on the left wing. As someone who is interested in aerodynamics, I would naturally think a plane with a left stall should be corrected by making the right wing stall sooner with stall strip on the right wing. The idea is to make the plane stall flat if it has to stall at all. If I missed it, I apologize.