Lara - I hope finagling is a word - because that is what I did. :) It wasn't really too much of a problem, because I caught it before I had sewed my blocks together. I had your row laid out on my sewing table, and I was placing my blocks to experiment with the layout I wanted to finalize on. That is when i realized my row was going to be short. <moment of panic>
It shouldn't be an issue for anyone else - they will just need to adjust their blocks to plan for it.