Could there be a more simplistic reason for the yaw induced roll? Maybe the 'undisturbed' airflow, under the wing going forward, that is angled toward the wing root reduces the span wise flow of high pressure air toward the wing tip, thus allowing the upper surface to produce lift with greater efficiency and the airflow under the lagging wing angled toward the tip, slightly increasing the span wise flow of air toward and over the tip causing a reduction in lift over the lagging wing. Hence a continued roll.
Thought I'd throw that into the debate for arguments sake, I'll duck down below the parapet and await the incoming
