The NBA commissioner slapped the Spurs with a $250,000 fine last week for sending their starters home to rest rather than play the defending champs Miami Heat during a nationally televised game in Miami.

The photo shows Spurs superstars Tim Duncan, left, and Tony Parker, right, dressed in Halloween costumes and holding guns to the head of a party guest dressed like NBA ref Joey Crawford.

The photo of Duncan wielding a sawed off shotgun — and Parker holding a toy automatic weapon — to the guest’s head was taken during a party at a hotel or private residence.

Stern is obviously not in the mood for any more Spurs antics, so this photo could lead to suspensions and stiff fines for both players.

SR