Don't think they need to smear him at this point. They are going after him for "inciting a member of the military to commit the crime"... not that he published the stuff.
In other words... whether or not you believe the reason the US is extraditing him... I wouldn't think they feel the neeed to go to Sweden to re-open the rape thing. It's probably more along the lines of how the UK is jailing him for defaulting on his bail.
Get your games from GOG DAMMIT!