Fortunately, I think the leather flip cover appears to be saved. It's drying out, but I believe it will live to see another day, its pouty eyes peering up at me, "What were you thinking??," but grateful I rescued it before the spin cycle hit. However, the spiral notebook pages are long history. Not quite gone with the wind, but gone with the water. Happily, I had nothing important on them -- no "Notes for the Great American Novel. Brilliant premise. Guaranteed Pulitzer Prize-winner." Unhappily, I now have little shreds of paper on all my clothes. Ah, well, nothing that a few hundred good shakes and a lot of picking can't get rid of.
I realized it halfway on my morning constitutional. I reached into my back pocket for the...OH, NOOOO! It's one of those moments when you start slapping yourself on the forehead, and also wish Captain Kirk was there with his transporter, so I could instantly get back to the washing machine. But of course, you realize that it doesn't really matter much at this point because it's been swimming in the water for 15 minutes already, so you're pretty much out of luck by now.
Life will go on. Alas, the spiral notebook will not.