You brought it up mate. I thought you might be able to inform us some more since you gave no source. I'm not researching the validity or context of random **** posted here or anywhere, happy to chat hypotheticals though.
Fifita apparently hired some pretty hefty legal counsel to fight this. Ultimately it failed but I'm without doubt that he was tutored as to how to respond to questions. Maybe given he had no carry over points the goal was a reduction on grading and them accepting he's a big ****er who throws himself into everything always and it was a totally accidental, unintentional and unfortunate mistiming that saw him land on the other bloke's head. A very different thing to what we know as a crusher which is a tackler wrapping up the ball carrier's torso and then applying his weight on top of the head/neck while they're on the ground. Fifita did no wrestle, didn't wrap the arms or torso. All he did was flop and drop himself onto a live ball carrier. The ball caarier unfortunately popped his head up at the wrong time.
Not anywhere near as intentional as an eye gouge, surely! How about just a fine? ... 3 ****en weeks?