It could, if it was told to. It’s likely there is an idle or autonomous mode the operater was supposed to set it to before taking off the headset. Instead it was left in “replicate every action the operator streams to you mode” until the stream abruptly cut off while the robot wasn’t in abalance point. It’s possible the robot normally has an amount of delay/wait time when the signal is lost before reverting to some failsafe state. But since the signal was cutoff while it was flailing it’s arms above it’s head, that’s alot of weight moving significantly above it’s center of gravity and suddenly stopping with no compensatory movement offset of any other part of it’s body.