About two hours before tip-off against the Miami Heat, Gilbert Arenas was spotted in a concrete basement stairwell underneath the Verizon Center, moving very slowly up the stairs. He looked more like a patient recovering from hip surgery than a professional athlete as he put his right foot on the next step, then carefully placed his left foot next to his right. “Hey, you all right?” Arenas was asked. “Yeah, I’m OK,” he replied. “Ritual.”