Those tellers are going to get in trouble. The FDIC usually requires you follow such instructions. Not following them can get people killed—and since the deposits are insured, there is no reason to push back.
The tellers in our bank were trained over and over, the money is not worth your life. But we had tellers executed during a robbery years ago—so the message was a little more relevant to our bank.
and since the deposits are insured
***********
Whom at the bottom line is paying for all that insurance?