I have to admit, this is good spin, but awfully thin. By answering in this way, they admit they are real. The onus is on them now if they claim any individual e-mail has been edited. Prove it.
Exactly what the argument should naturally point. If they take the bait it would mean opening up all of the global warming cult scientist's correspondence. You then pick and choose what scientist you can isolate and isolate him/her, humiliate them..... errr... never mind. I must have channeled Saul Alinsky.