Complex sentence: Williams announced his retirement from international rugby on 1st October 2007, following Wales' early exit from the 2007 Rugby World Cup only to make a surprise decision to return to international action when he was recalled by new Wales head coach Warren Gatland in January 2008.
Split into simpler sentences: Williams announced his retirement from international rugby on 1st October 2007, following Wales' early exit from the 2007 Rugby World Cup. Martyn Williams retired from international rugby after the 2007 Rugby World Cup but made a surprise decision to return to international action when he was recalled by new Wales boss Warren Gatland in January 2008.