Weird process, this writing

A couple weeks back, I reported being in fast-and-furious writing mode. More recently, the work has continued fast and furious ... but I've been cranking away for more than a week without adding, or even changing, a word in the novel in progress. (The first draft is at about 70K words, so more than half complete. The book's working title is Déjà Doomed.) 

For anything beyond a short story -- and often for those -- I write from an outline. After dozens of novels, novellas, and novelettes,...