This is a lost cause. This company will lay him off within a few months of moving back. This fake RTO was designed to force him to quit so they did not have to do a formal layoff. He should cut his losses and look for another job ASAP.
Never trust employers and always have a large reserve of funds. Never put yourself in a precarious position like this. An employer will screw you over the very moment they think it will make them more money than not doing so.