Scorpio
Armchair Expert
Accidentally opening his mouth?? No, sorry I don't buy it.
That was a straight up bite and should have been a send off.
Gamble has his 95kg body weight on top of him, his head is pushing forward onto the back of Wighton's head, and he has his arm wrapped around Wighton's mouth while still applying pressure to his head and upper body.
To me that's at least enough mitigating factors for the ref not to decide to send him off at that moment, but we'll see what the MRC say.