It took a few days, but Rihanna is finally lashing out about CBS’ decision to yank her musical opening from “Thursday Night Football” last week and air it this week instead … and let’s just say she’s not happy. With the Ray Rice scandal still fresh, and the Ravens set to play the Steelers, CBS opted not to run a taped musical segment featuring Rihanna … seeing as she was the victim of a high-profile domestic violence incident.