Wait - he posted something about php, curl and tor on StackOverflow, using - for less than one minute - his real name? And that is supposed to link to the operator of Silk Road?
I don't know about you, but that seems very far fetched to me. Also, it indicates that SO saves all changes made to a user profile, forever, which I think is a bit unusual.
However, if thy caught the right guy, hats off to the prosecutors for making the link.