Mayor L. Douglas Wilder sure knows how to make an exit. That is, he knows how to make other people exit in dramatic fashion. That's apparently what he did earlier this month to Michael Jackson, whose had been serving as a senior assistant to chief administrative officer. Until last year, he'd been a budget analyst for City Council. Jackson is simply the latest in a growing list of competent city bureaucrats shown the curb since Wilder issued his 2004 promise to clean up the "cesspool of corruption" at City Hall. Used to be that Wilder's office would send out a press release, artfully crafted to both insult and thank the departing official for his or her service to the city. Word is that the ax fell for Jackson on Friday, Nov. 7; that he was escorted out of City Hall by security. We're still waiting for the press release.