Tamsin Lonsdale is making the boldfacers go red.Photo: Patrick McMullanIt looks like Tamsin Lonsdale, the London socialite looking to make a splash with her new private dinner club, might just have a flop on her hands. The Observer today chats with a couple of the club’s disgruntled ambassadors, one of whom says, “She’s not offering a service to the boldface names. She’s using these people to bring in the mass.” Shocking! You mean this wasn’t merely a way to get people together to talk about the new Ang Lee flick? It was a marketing gimmick? Hilariously, one member gripes that she paid $100 for a meal at the Spotted Pig that normally would’ve cost her $40, and Londsale defends herself by saying that Jay-Z ended up dancing with everyone. But really — if Gawker types can rub elbows with Jay-Z at the Pig, can’t anyone?