Burger was banned for eight weeks after the incident in the second Test but De Villiers had continued to insist the flanker did nothing wrong in Pretoria.
And Australia legend Shane Warne ridiculed Collingwood in Sydney on Wednesday during a sledging incident on day three of the final Test, sparking renewed debate about the decision to honour the players.
Regional development minister Danny Kennedy answered a number of questions relating to water supply, including Exercise Watermill, a mock incident exercise held in October 2011 to stress test Northern Ireland Water's response capacity.
To their credit they did this for most of the day, until an unusual incident halted the arm wrestle that had produced a tough struggle of excellent tough Test cricket.