I think Aunt Fancy is on to something. The ONLY thing that really helps an ex-JW drop the feelings of guilt is to do more research. It's ok that he feels and doesn't think, let him read about the needless hurt and pain the WT has caused people. Let him read at least the part of CoC that talks about the Mexico/Malawi deal. Only a cold hearted bastard couldn't be moved by that.
This brings out a very important point for all of us with loved ones still in. If they just happen to quit meetings, fade away without doing their proper research and finding solid ground for their doubts and issues... They are easily dragged back either by "encouragement" (guilt) from family/friends or by something they see in world events that makes them panick. Look at how much the meeting attendance and baptisms spiked in the year following 9/11.
When we want someone out, we can't be happy simply to see them quit going to meetings. Brain washing goes MUCH deeper than that, and can be re-ignited anytime.