My guess would be that the depression is getting more of a hold of him. I know when I get really depressed (over this mess), I often shut everybody out. I usually send emails saying that I'm find but don't want to talk.
I think he's hitting a new stage of this mess, which is good. If he's finally getting to that point of depression and despair, he'll reach a point where he has to find his way out of it. Right now, he doesnt' know how to do that.
