If you are looking at this from the perspective that adidas was always looking to minimize negative financial impact, this was never going to happen. Adidas only spoke up and ended the partnership when the public pressure (and the financial impact that comes with it) was to loud for them not to take action, which would impact the shareholders. They're selling the rest of the shoes now because not doing so is going to impact the bottom line which again impacts the shareholders as well.
Every decision they make in the moment is about how to minimize losses. They're legally bound to act in the best interest of their shareholders. 99% of the time, that looks like them maximizing profit minimizes losses. That simple. To us on the outside it looks like them flip flopping, and it is. But theyre just riding the money wave just like every other company does.