From what I've gathered, Arenas, Crittenton and some teammates were indeed playing a card game on the flight back from Phoenix, and both Crittenton and Arenas were coming up on the losing end, but Arenas didn't owe $25,000, and the amount wasn't owed to Crittenton, but to JaVale McGee. Arenas bailed on the game unhappy with the rules, and Crittenton was left to pay the pot, much to his displeasure, so he was trying earnestly to get Arenas to pay his part. Tempers flared during this dispute and I'm told Crittenton wanted to fight Arenas for backing out of paying up. Arenas, meanwhile, said he would burn Crittenton's car, and Crittenton said he would shoot Arenas in his bad left knee.
That brings us to practice on Dec. 21 when Arenas placed four guns -- the ones he had brought into the locker room to store in his locked box, according to him to keep from his children-- on the chair of Crittenton with a note 'pick one' on top. Crittenton came into the locker room where Arenas was waiting and ready for a good laugh, but Crittenton wasn't as amused as Arenas continued joking around. A source says teammates told Crittenton not to take the taunts from Arenas so seriously, but the younger guard didn't appreciate being made fun of and chucked one of Arenas' guns across the locker room and said "I have a gun of my own." The situation was soon diffused