Anything which deviates from society's "norm" may be considered "aberrant behavior".
If you feel comfortable applying that term to homosexuals, then you should feel equally comfortable applying that term to religious and societal minorities in this country, as well. The Amish, for instance, are "aberrant".
However, I strongly doubt that your use of the term "aberrant behavior" for the Amish might convey the same negativity as your use of that term for homosexuals. Particularly with your reference to "blame" in the same sentence.
Oh, and one thing more...http://www.behindthename.com/messages/8447.html