It's definitely not good. But I'm not sure what law enforcement has to do with this. There are lots of morally repugnant things going on, but I haven't see anything that would indicate anything illegal went on.
That is maybe outside of someone violating a Court Order keeping the emails under seal by leaking them. But, unless someone stole the emails and/or hacked where they were stored, even that is really a matter of contempt of court. And that has nothing to do with the Saints or the Saints front office.