A shala mate who goes by the name Anonymous has given me an absolutely brilliant idea (see last comment on this post:
There bad lady in class called Yoga Chickie? She lazy to do Supta Kurmasana? Arms too short, chest too tight, mind too small? You know who I talking about. I think you very good teacher for patient with Yoga Chickie.
Now let bad lady do next pose.
Forgery. It's what's for criminal.
Now, if I only had the guts.