It is disorienting and dangerous for the weights to move in an unexpected manner during a competition lift. Kill might be but if a stretch but there is a high risk she injures herself and others.

Powerlifting infodump lol:

You don't get to that level without failing (and bailing) on lifts and you learn what different failure modes feel like and how to respond.

I'm not a good power lifter but based on my experience in competitions this might have felt like the load wasn't balanced which could be: bad positioning of the athlete under the bar, improper loading (collar not tight against the weights) or your supporting muscles are fatigued/your foot position is off meaning the upwards motion is going to be harder than you think.

You assess your position and the balance at the top of the lift before you start the downward motion. It's not super common, but people abandon lifts here (safely). Choosing your attempts is a whole discipline of its own lol and sometimes we get ambitious.

This is speculation of course (I didn't read any interviews, I hope someone can correct me if she did describe it) but I imagine she's doing the downward motion, feels a wobble, either reflexively starts the upward motion or makes the decision to not go as deep and hope the lift is good.

It's not possible to know what would happen if she kept going as normal. Maybe it would have been fine. Maybe she would have unconsciously compensated for what felt like an unbalanced load , leading to disaster. Or maybe she would have been shaken, got stuck "in the hole" and had to bail, which is also risky to herself and others.

You didn't mention if you do competitive powerlifting yourself. I think we're all used to seeing elite level athletes push themselves super hard and assume it's a choice they make. I think with competition style power lifting events most - if not all - people will hit that intense focus, doing everything by reflex, can't hear, can't see, can only lift moment. That's why there is a rule where you are allowed to ask them to clean the platform before your turn 🫣 My point here is that it's a lot less conscious than people might think it is, making this kind of thing even more dangerous than one might assume.