The experienced 44-test midfielder spoke for the first time following the Stade de France encounter, won 38-18 by the All Blacks, in Edinburgh on Thursday evening after the team naming for Saturday's (Sunday NZ time) clash against Scotland.
Williams took his brain-explosion play on the chin, after being yellow-carded and also conceding a penalty try when he batted away a French cross-kick in-goal, instead of attempting to catch the ball.
The play he made is standard in his former sport of rugby league, but not allowed in rugby.