Seems justice was served here. The incident that was called to the TMO and judged by Polock may have been over penalised, that's the whole 'intent' debate (there is no question that it was a penalisable, even cardable offense, just hair splitting over the colour). But the same player rucking the head twice in 5 minutes clearly indicates that at the end of the day the right decision was made even if it was inadvertent.
Clearly a finger. But so what? The mics pick up all kinds of words on the field too, just part of the aggressive nature of the game. If it's aimed at an official that's different, just like 'words' would be. But nothing in the footage indicates it is.