<human>: I work for a retail store, and every Christmas is very stressful. Some of the new hires have a harder time keeping up. Our manager consistently loses patience with them and threatens to fire them all the time and verbally assaults them. 

Just yesterday he was towed off from work in a cop car for grabbing one of our associates and tossing her aside, while shouting at her. Nobody saw the incident but it is no surprise to anyone who works there that this happened. The company has started to investigate the matter by interviewing all of us. We have each expressed our frustrations with this manager. 

At the end of the day our regional has updated us on the situation and told us that he could be back as soon as Monday to start "helping" us through the holidays. The associate that he grabbed is pressing charges but I get the feeling that nothing is going to happen. The company I work for has a huge team of lawyers and Im afraid of a mutiny type situation. 

I feel that the company would rather keep this manager around since he is very profitable to them. And they would side with him over an associate with a low sales average that has only been with us for a few months.

What if anything can be done?

Could you distill the essence of the text into 1-3 sentences?
<bot>: My boss hit a co-worker. She left the company, and he could be back by Monday. we are scared of him. What do we do?