On the surface it's about Nyhuis but it actually goes back to the combined Fremantle v Perth game in 1886 when Frank Snoo was given a 12 week ban for punching the Perth captain, who's brother sat on the tribunal. The complaint was that he struck him with a left hook, ignoring the fact that Snoo had lost his left arm to a combine harvester over the off season.
Presumably he was too concussed, or perhaps his depth perception was iffy after they removed the eye, to notice that it was actually a right hook - but the point stands that it was a set up.