Oh, so the yarn on the previous row broke while you were purling into it? So you'd have to undo the whole row to get to it? I see. You might just want to do a duplicate stitch with matching yarn in that row, over about 4-6 stitches, to span that gap, so it doesn't unravel there.
It's odd that your pictures aren't showing in your post. It looks like the place that's hosting your images restricts your ability to link to them. You might try another image-hosting place next time. (Or just add them to the post right from your computer, using "add an attachment" when you post. )
Your blanket is looking GREAT! Thanks for sharing the pictures!
I can see how your hands would be cramping up!
I just had a thought...
This would be time-consuming, but if you wanted to make the stitches easier to work, you could do this: at the end of every row, transfer your stitches to a much smaller needle. Then work the next row with your normal size needle. It won't effect your gauge, because you'll always be knitting onto the same size needle, and there will be a lot more room to work into the stitches. Just a thought. I've never tried such a thing, but it seems like it could work. Also if you have interchangeable needles, you could do a fast trick, that would take no time, and have the same effect...