Sure, he has plenty of free time, but to send a few e-mails or post on this site does not take up much time. I am currently doing some work for a friend and living in different locations but I still have plenty of time to post on here.

No, not boredom, he really does not like you for some reason. He assumes that you are the main protagonist from DD and has the impression that you have damaged his professional reputation is some way. Simple as that IMO.

I was going to use another word instead of impression but can't think of it at this time.