But the priority is to try and get SB to see the error of his ways. Very good of me?

Indeed, that's very good of you. SB would do himself a huge favor if he calmed down and made an attempt to keep on good terms with Chinese staffs whose morals he found to be not the highest instead of antagonizing such people. His problem is one of the mind and your sound counselling would be of great benefit to him were he able to widen his outlook on Chinese culture.
When in Rome, do as...........!