Hi Jan, Of course, your LYS is right there and can see the whole pattern and the finished back of your sweater but I've read the directions you quote and I can't see any other way to interpret them other than the above posts. I've tried reading forwards, backwards, up, and down and it still comes out the same.
I'm guessing that this is at the beginning of the back (the lower edge). If so, even the pictures on Ravelry seem to show a decrease quite a few inches up the side for the waist shaping.
Before you rip it all out, what was it that didn't look right about the back to you?