J M H O but I still believe that contacting INS and informing them of your upcoming divorce would be to your advantage. I believe in previous posts somewhere you said you have not been married for 3 years.
Yes, he will probably lose his 'green card' and be deported, but that is not your problem. It would be a consequence of his actions as in his emotional and mental abuse of you. He destroyed this union. His consequences.
Take everything you have, including the phone pictures, the credit card statements, your 'log' of incidences, etc to the consult and then ask this attorney what he can do for you to get this man OUT OF YOUR LIFE.
Hope that helps a bit. Know that we are walking with you in spirit, your are not alone.
Love and hugs,