Asperger's is a pretty long way from Autism, and it's also pretty much the least life-affecting empathy disorder (other than autistic spectrum disorders, narcissism and psychopathy are in the list as well - but given that there's no evidence they're more widespread in the computing world than elsewhere, you presumably weren't referring to them). Disorder pretty much by definition refers to a diagnosable condition, so it's natural to assume that you're referring to Asperger's or high-functioning Autism.
"Do you have a theory about the mindset and background of the perps? Certainly there is some problem with their socialization if they can objectify a woman."
When women complain about men sexually propositioning them in the middle of a crowded city my first assumption isn't that the men in question are borderline spectrum, it's that society as a whole is pretty bad at enforcing reasonable behaviour standards. I'd be fascinated to see your evidence that these events are more common at open source conferences than at events attended by people who don't fall into the stereotypical "Software developer who's never met a girl" category.