I decided I could not throw away all the work I did on the Rainbow Fail. I got many suggestions on what to do with it, hang it as art, quilt it anyway, starch the heck out of it, but I chose to chop it up into 4.5 'charm squares. I found the flattest parts and hacked away with my 4.5" ruler (so glad I own that). I got about 30 squares and a few 1.5" strips and I assembled about 5 more scrappy blocks with the left over angle cut fabric.
I now know where I went wrong in Rainbow Road, I made the angles at
the beginning far too steep and it made the strips excessively wavy. I may have wasted a bit of fabric but I think this whole Rainbow Fail was a great learning experience.