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Facebook's COO is tearing down the temple. That's the only conclusion I can reach after witnessing the Sheryl Sandberg's management of the Palo Alto-based social network. What I hear from inside Facebook: She demands total loyalty, and brooks no dissent — even the healthy, boisterous debate that's common to startups. You're either with Sheryl, or you're against Sheryl. And if you're against Sheryl, you're not long for Facebook. What's really frightening is how she effortlessly cajoles lies from her underlings. Note how Matt Cohler and Ben Ling exited the company singing her praises — despite what the talented executives were telling confidants in private about Sandberg. There's a simple explanation for that: She bought them off, with still-valuable Facebook stock.Do the math: Ling joined Facebook in October 2007. He's leaving Facebook in a few weeks, months before his one-year anniversary — and it normally takes one year of employment for stock options or restricted stock to vest. However miserable Ling was under Elliot Schrage — Sandberg's personal flack and de facto chief of staff, whom she put in charge of Facebook's development platform, to the utter shock of the entire Valley — can you imagine he walked away from that much money? Far more likely: Sandberg and Schrage asked him to resign in exchange for getting to keep his shares. Ling, who was well-regarded at both Google and Facebook, now gets to walk away from Sandberg's mess. Cohler, formerly Facebook's product chief, has also made nice noises about Sandberg — and he, too, needed the cash. He's now a general partner at Benchmark Capital, where Sandberg's husband, Dave Goldberg, is employed as an entrepreneur-in-residence. (None of this is coincidence.) General partners at VC firms normally buy into the funds they invest; Benchmark Capital's most recent fund, raised in February, is an eye-popping $500 million.The amount Cohler would have to invest personally comes to roughly $500,000, by my estimates. Selling his Facebook shares seems like the most likely way he'll come up with that money. Isn't it likely that in exchange for making nice noises about Sandberg on the way out, Cohler got an assurance that Facebook won't make trouble about his share sales? The fundamental problem with Sandberg's take-no-prisoners management style: It's exquisitely tuned for the zero-sum world of Washington, where you're either in power or out. She's treating her appointment as Facebook's COO like a new administration coming into the White House. Her years at Google, which was the only tech-startup game in town for the long years of the bust, reinforced the wrong lesson. Washington's bitter internal rivalries thrive on a scarcity of opportunity. Today's Valley has an abundance. Her employees have options, and not just the kind she can grant. Which leaves the question: Why is Sandberg so determined to drive talent out of Facebook? My working theory: She wants to remake the company in her image. Here comes the Sandberg Administration! But to do so, she'll need to find skilled accomplices, not servile yes-men like Schrage (who wouldn't know an API if it extended his subclasses). And she'll need to articulate what, exactly, her new vision is. For all of Mark Zuckerberg's flaws, he's created a website which will soon have 100 million users, and is worth billions of dollars according to a long line of Silicon Valley moneymen who are slavering to buy his employees' shares. What, exactly, has Sheryl Sandberg done, besides buy a lottery ticket by joining Google when it was still private? Sometimes you have to tear down before you build. But no one knows what, if anything, Sandberg is building — besides fear and doubt. That's hardly the mark of a Silicon Valley leader. It's a tactic that may have worked in Washington, D.C., where Sandberg worked for the viciously political Clinton administration. But she's killing the company's morale with her Beltway tactics. If she has a bright idea, she'd better start talking about it. It will take far more than three days to rebuild this temple — and it's not clear she has time to spare.