My choice was to rip back all the knitting to get to the problem area, or drop only the stitches in the lace area down to the problem row. Dropping down 15 stitches seemed a much faster, a much easier, a much smarter idea to me and that is what I did - the first time. Shown here, I have the 15 stitches dropped down to the problem row and ready to be worked.
Normally I would strongly recommend a drop-down repair for mistakes of this nature: Cable mis-cross, lace repair or twisted stitches. It makes much more sense to drop down 15 stitches and ladder or knit them back up correctly than to rip back inches of knitting.
And it should have worked. If it weren't for my short attention span. After the first drop down repair, I knit merrily along only to forget the lace work in the centre 15 stitches yet again. And again.
Ripping back is a set back. So much so, that my goal last night morphed into getting back to where I started. I think I did. There is a bit more completed today than yesterday.