I have no problem with this at all. I also heard Walsh was the first coach to administer this kind of psychological evaluation on potential draftees, and Singletary was partially mentored by Walsh. Plus it scratches one QB off our draftboard (I don't want a QB in the first 5 rounds!)
Also, my parents are divorced, and I currently am 21, the same age as Stafford. I see no reason why he should have been surprised or offended by the question unless it is a significant issue for him.
...And a new day will dawn for those who stand long.