Did it myself for a touch, but dropped it. I was disappointed in myself (I saw saint's point, and yours) because I felt I should have not "jumped into the fray".
I had the same situation come up, but didn't have an issue with explaining it to the wife, I simply chose to block everyone's av after that, as it is an option. I periodically take the block off to see if I'll have the same issue, and as of today, have decided to leave it on for a bit.
While it doesn't offend me, I certainly can see your point. Is blocking everyone's avatar not something you wish to consider in order to self-police your computer?