I asked the question a couple weeks ago:
I would like to blow a whistle but don't want to face retaliation
The advice that was given was to contact an attorney who would typically represent the other side.
I did this, and the attorney told me, "hey I can't get involved in this. If the people in my circles find out that I was involved in getting one of our own in trouble, nobody will want to work with me." He gave me the name of some other firms, but told me that they would probably say the same thing. This was precisely the "conflict of interest" to which I was referring.
Any further suggestions?