Well, after much work and added expense, Todd has managed to remove almost all the stain off the floor. It still holds a slight red hue and is not removed completely from other areas but it is so much better than before. The kitchen floor is definitely more yellow still.
They look pretty good here too. I am happy to say that Homestead shipped me enough stain in their other colours so I can custom mix what I need to get the floors to match and be the ultimate colour of their provincial walnut. In spite of the frustration of this disaster they have come through to help and I am grateful for that.
I will tackle the floors on Monday again and fingers crossed it will work out!