“Don’t send an e-mail that says ‘I think we broke the law’ or ‘I think we violated this contract.’”
That seems like pretty reasonable training. You shouldn't put that on the record because you're not an attorney. You are just some Dork, or Senior Dork, or Staff Dork, or whatever grade of Dork you happen to be who is still not an attorney.
Maybe the attorneys also have to take training that advises them not to say "I think this dereference might be undefined behavior" in emails. Who knows.