Of all the things I've heard, the one that seems the most true to me is that Assange was secured by friendlies hours before an assassination coordinated by Brennan and Kerry was supposed to happen, where Assange didn't even know who was taking him until after he was gone, let alone the rest of WL. If that "DAK" post was legit, it was probably meant to stand for "date Assange kidnapped."
I can't for the life of me remember who said that, though.