"A group of 50 NBA players intend to push for the dissolution of their union if a new round of labor negotiations fails this weekend, or if the talks produce an unpalatable deal, according to a person who has spoken to the players. The movement was said to be entirely player-driven, and borne of a frustration with the pace of talks between the league and union leaders"
— - Howard Beck, New York Times sports writer
Read more about potential decertification
here. Decertification would likely mean the entire season would be lost.