Bill Niman used to supply us with our favorite beef and pork products at Trader Joe’s. Over the last year or so, they’ve become increasingly less visible on those shelves — just as Bill Niman gradually became less visible at the company he founded, until he was forced out last year for being a bad businessman. Funny how no one called him that for twenty-five years, as he and partner Orville Schell were building up the company with meat products every chef in America coveted.