That is logically, and fundamentally dishonest. There was an implied contract when the prescription was handed over.
BTW, I found the business of the founder of terrorism on your profile page fascinating. I never knew anything of that person who I have since looked up.
Yes, there's probably some technical way to prosecute this guy - larceny by trick, embezzlement, something. Of course, then he's going to raise technical arguments about the value of this piece of paper and it just seems like it all somehow misses most of the important values and issues at stake.
Maybe the licensing board is the best route.
BTW, I found the business of the founder of terrorism on your profile page fascinating. I never knew anything of that person who I have since looked up.
Well, there were lots of terrorists both before her and many since, but she did help to write a fascinating little chapter in history. I think the remote time and setting and even the fact that she was a woman helps us to see her a bit differently than her contemporaries did. ;-)