From what CrushBug said it sounds more like their CDN service fubarred. Not much they can do about that besides ensure whatever caused the problem is fixed and re-upload it to the CDN. Certainly nothing they could have done to prevent it. It's not an issue of testing, since everything was fine when the DLC left their system.
If you're a US citizen, please speak up for the unarmed black American men being murdered every week by the police. It's not about "social justice". It's about human rights.