Ev Williams didn't Twitter that he fired his CEOThe good news: Jack Dorsey, the handsome programmer ousted as Twitter's CEO yesterday, can put his nose ring back in and stop seeing that CEO coach he hired. The bad news: His cofounder, Ev Williams, who's replacing him as CEO, is sugarcoating Dorsey's exit. Dorsey is not going to be working in Twitter's office, and his coworkers are saying their tearful goodbyes; he's effectively out of the company, though he retains the title of chairman and what is presumably a large stake in the messaging startup. So why did Dorsey get fired?"This has nothing to do with the economy," Fred Wilson, a partner at Twitter investor Union Square Ventures, told The Deal. True enough — but it does have to do with Dorsey's incompetence. One industry insider says he botched several acquisition offers — one by nattering on about his original idea for Twitter as a messaging service for ambulance drivers and bicycle couriers, an idea he still wanted to pursue after a Twitter acquisition.