From Jayski.com:

Changes with Nextel/Sprint? A major shakeup appears under way in the Sprint-Nextel sports department with two top players leaving, and that has the NASCAR garage abuzz with questions about the company's future in NASCAR stock-car racing. Jill Gregory, the director of NASCAR Nextel Series marketing since 2004, is leaving to join Bank of America's new NASCAR marketing operation. And Michael Robichaud, vice-president of sports marketing for Sprint-Nextel, and formerly Nextel's director of sports and entertainment marketing, is also leaving, though his next job is up in the air. And there is intense speculation here that Sprint-Nextel's chairman, Tim Donahue, who made the original deal with NASCAR before last year's merger, may be leaving, too. All that increases speculation that officials on the Sprint side of the company are taking control from all the key Nextel people. Sources here say that might not be good for NASCAR, because they say Sprint executives generally aren't fond of NASCAR and might try to unload the $70 million a year, 10-year sponsorship, perhaps by selling it to another company.(Winston Salem Journal)(4-3-2006)