Re: Just send him over there and good riddance.
"He committed a crime (Let's be honest here and not use any 'allegedly'), and broke into a hornets nest in terms of targets, the US Government."
Where? Did he ever visit the US? If the actions he took were taken on UK soil irrespective of where their effects took place then surely the obvious thing would be to charge him under the UK legislation. If the US authorities find it too
embarrassing hard to provide evidence to a UK court then he'll be found not guilty and can claim double jeopardy against any subsequent attempts at extradition.