If you look at the video, the one section collapsed, and there was a time gap before the second section came down-pretty obvious that the first collapse weakened it to the point that it collapsed. Since the connected, still standing portion suffered the same forces from the second collapse, common sense would indicate that it has to be considered to be in a weakened state.
i wonder if the divide wiped out half of those condos, whereas the tenants on the surviving side lost half of their 1000-1500 sq units.