Actually, after reading your comments the sentence that pinged me didn't bother me nearly as much. The quote in question:

"Lalumière et al. discussed several alternative explanations for why non-right-handedness is associated with homosexuality in both men and women. One possibility they suggested was developmental instability: a compromised ability to compensate for perturbations of development." (Blanchard & Lippa, "Birth Order, Sibling Sex Ratio, Handedness, and Sexual Orientation of Male and Female Participants in a BBC Internet Research Project", Arch Sexual Behav, Volume 36, Number 2 / April, 2007, http://www.springerlink.com/content/0417v7308624l342/)

Still, I question the use of "developmental instability" instead of "developmental variation", for instance. Instability implies there is a "stable" development associated with a normative heterosexuality. A nitpick perhaps, but given that 50 years ago lesbians were "treated" with clitoridectomies, I'd rather err on the side of slightly paranoid rather than complacent.