First off he is not banned at all. He is a long time member and is more than welcome to stay at our site. We have never had an issue with him in the past and we would hope that he would be a member here for a long time to come.
He was warned for making disparaging comments about the deceased parents of one of our moderators. I am sure that everyone here, including Nordstrom, will admit that the comments he was making were in very poor taste. If you look at that thread on that other site you can see that even he agrees that his comments were way over the line. We value his participation here, but did not value him making jokes about the death of our moderators parents.
We are happy to have him here and simply warned him about making the completely inappropriate comments.