He's been like this for some time. I never really cared for his attitude for the few times I dealt with him both personally and professionally. This dates back to the late 90s for me.
WARNING, airing my own dirty laundry!
That said, as someone that deals with his own demons from a domestically abusive childhood, I do sympathize with the guy whatever his mental issue is. I don't know his situation, but I started control of mine the night I got the neighbor while my dad finally snapped on my mom instead of taking the baseball bat to his head after sneaking up on him while he beat her. I wish that experience in life on no one. That was 1997 for me, and at 33 I still have nightmares about that and other instances in my childhood past.