ironically lost

Ok, so I've been knitting the Gathered Pullover from the Winter 2007 Interweave Knits for forever. I'm knitting it out of the roving I got back in 2007, when I went with Elizabeth to the Michigan Fiber Fest. That was a really long time ago. According to my Ravelry, it was almost a year ago. This sweater has been put on hold several times, once because it was summer and I didn't want to knit woolly things, another time because I put it somewhere and forgot where it was, and then again when I lost the magazine.
But I've finally knit all the pieces, and I've been working on finishing it since last weekend. I sat down intending to sew in all the ends and finish sewing on the sleeves tonight. This is as far as I got:



Notice anything missing?

I am not crazy. I KNOW I knit two sleeves. I am absolutely sure of this because I knit them two at a time on two circulars. I'm sure of the two circs part, too, because I borrowed needles from Mom, I only have one set of #7 needle tips. So why am I down a sleeve?