Hi Kevin,
I'm sorry to hear what Jon's father did..
I take back all the stuff I said earlier..
Use every means at your disposal (legal) to rid yourself from this person.. He obviously is not in any way trying to help you, or even make a half-hearted attempt to pretend to care about the fact his son just passed away.
In their own words, he's a bad association... Use the law to rid yourself of him..
Sorry for your loss, and my thoughts and prayers are with you