Sunday’s events triggered frustration and disheartenment throughout the organization, multiple sources said. The fallout of Simmons being ruled out Sunday led to a meeting among franchise officials, Simmons and his agent, Klutch Sports CEO Rich Paul, on Monday in Brooklyn. According to sources, Simmons told those in the room that a mental block exists for him, dating in part to last summer’s postseason, which is creating stress that could serve as a trigger point for his back issues. He added that he does want to play basketball and play for the Nets as he works on solutions in regard to his well-being.