Williams's troubles with the Blues had no impact on his international career, as he was included in the New Zealand squad for the two-Test series against in June 2007. He started both Tests, but suffered a serious injury in the second Test, on 9 June, when he fractured his jaw while tackling French number eight Sébastien Chabal. As a result, he missed the whole of the 2007 Tri Nations Series. But despite having his jaw wired and being forced to subsist on soup for several weeks, he made a return to rugby for his club side, Ponsonby, at the end of July, scoring two tries, and started for Auckland in their Air New Zealand Cup match against Bay of Plenty on 3 August, scoring a try in the fourth minute of the game. Coincidentally, this was the first time that Williams and his younger brother, Jay, had played together as locks in first-class rugby.