Reports are that he had a brother that was seen at his apartment often. Also a woman with a small child. I wonder if this Anas M. Hasan is his brother?
check out link in #122; looks like they went to Va Tech together, but am turning up precious little in a search.
Also, I collected posts from MestaMachine on this thread at this post, esp (for right now) about the mosque:
http://www.freerepublic.com/focus/news/2379559/posts?page=183#183