49ers coach Mike Singletary has vowed to “tone it down” after a horrible debut last week where his team was obliterated by a poor Seahawks bunch, then sending a star player to the showers, conducting a Coors Light commercial that doubled as a postgame press conference, and at halftime made a pitch for his own Preparation H endorsement. Titans coach Jeff Fisher, who played with Singletary in Chicago, hinted in an interview during NFLN’s pregame show that Singletary will in time figure out what to say, and what not to say. “As [Singletary] gets more experience,” Fisher said, “he may realize that just because you feel it doesn’t mean you have to say it and if you need to say it, do it when the doors are closed.” Singletary also lamented the reality that the Las Vegas code no longer applies in an NFL locker room