According to Cruise's X(Twitter) account [0], the suspension seems to be related to an incident in which a human driver hit-and-run propelled a pedestrian in front of a Cruise AV and the Cruise vehicle couldn't avoid hitting the person. When that incident was first reported [1], it seemed like a situation where if it was a human driver in the Cruise vehicle, they wouldn't be found to be at any fault. However given th…
The article you link to says there was more to it! The Cruise vehicle, after running over the woman, stopped on top of her with the rear axle/tires pinning her to the ground, trapping her there. And it just... sat there. I hesitate to believe that a human driver would do something like that. You could, however, argue that staying in place was the right thing to do; continuing to drive to get the woman out from under…
It may not be the performance of the vehicle in the incident that led to the suspensions so much as Cruise's performance in the investigation of the incident (or information about Cruise's prior behavior on safety info that came to light through the investigation.)