I beg to differ with the learned darthmarto: breaking a jaw in a deliberate assault is often accepted as GBH in English Common Law and has been so found often and in many jurisdictions. While it is not specified in the WA code, there is nothing in law or precedent to disqualify that interpretation.
There is also plenty of presence for assaults like that of Gaff’s resulting in criminal charges, especially when they occur away from the play and therefore, it has been found, indistinguishable from an assault “ on the street”
I think Gaff will get 10 weeks, by the way.