In 1989, Williams Sensei relocated to Byron Bay in northern NSW where he built 'Goshinkan Dojo'. Bordered by forest reserve, 'Goshinkan' provides a serene haven for all Australian aikidoists to train together. It was officially opened by Master Koretoshi Maruyama, President of Ki Society International, in May 1991.
Williams Sensei resigned from Ki Society International in January 2002 after a 28-year association with the organisation. At the same time he also resigned from Aikido Ki Society Australia, the group he founded in 1981. After re-establishing contact with Maruyama Sensei, Williams Sensei was requested to act as a facilitator to disseminate Aikido Yuishinkai throughout the world. There are now Aikido Yuishinkai dojos operating in Japan, Australia, New Zealand, Singapore, Argentina, The Netherlands, Germany, Denmark, Italy, France, Greece, Russia, the United Kingdom and the United States.
Michael Williams Sensei had been appointed as International Chief Instructor of Aikido Yuishinkai by the Founder of Aikido Yuishinkai, Master Koretoshi Maruyama, in October 2003. In this position he acted as facilitator and provided guidance and resources with the help of Valerie Williams and Elisabeth Andel.
In December 2009 Master Koretoshi Maruyama honoured Michael Williams by presenting him with the level of 10th Dan in the art of Aikido Yuishinkai.
Michael Williams Sensei retired from all his roles of responsibility as of January 2013.