Jihan Wu might be in hot waters right now, but that doesn't mean that BITMAIN would cease mining operations knowing how profitable it has been for the company for the last 5 years or so. Also, truth is they'd be laying off 500 employees due to the company's poor performance on this year, but I guess that's not enough grounds to actually halt mining operations at a whole. If they did, this might open a door for prospective manufacturers of mining equipment and scatter the mining power across the world and take the power away from China for once.
If the are no improvements on the equipments they used then its probable that the companuly will stop mining since the network require more hashpower compared 5 years ago. Besides, the double CEO system will create confusion in implementing rules and regulations, strategies and other important decisions for the company. As the old saying says ' Its impossible to serve two masters'.