From PolitFact, 05/18/2010:

In its claim, the [Alex] Sink campaign says [Rick] Scott “was forced to resign as the head of a company that pled guilty to massive amounts of systematic fraud, including 14 felonies, leading to a historic $1.7 billion fine.”

Scott’s former company, Columbia/HCA, did plead guilty to 14 felony charges stemming from a massive federal fraud investigation, and Scott himself admits the company wound up paying $1.7 billion in fines. Whether Scott was forced to resign or not is something of an HR employment trick, but  media accounts certainly suggest the company’s board of directors was under pressure from shareholders to shake things up.