This happened due the private passenger vehicle not providing proper access for the bus driver to leave the intersection. I believe that the bus driver stood there for 8 minutes and was asked by officials to move on, but actually ignore directions. This blocked traffic from both directions.
Although the bus drivers actions were uncalled for and not substantiated, for the action caused by the driver of the private passenger vehicle, the driver was very lucky police were not called for obstructing traffic.
Maybe this this could be investigated to ensure this doesn't happen again by Transport for NSW and the Minister for Transport!