I asked Roy Peter Clark at Poynter if he could direct me to anything about writing "first-person" pieces, and he sent me to Chip Scanlan, who's a senior faculty member for writing there. He sent me to this piece and this Poynter special report on personal writing (PDF file). Some great stuff. While not exactly about how to write a sports column ripping Ricky Williams, there are still a lot of great tips and things to think about. Poynter's great; I highly recommend those who want to get better to learning their way around the site beyond Romenesko.