Ricky Williams, who was exiled for the entire 2006 season because of a fourth violation of the NFL substance abuse policy, has triggered the process that could end his one-year suspension and lead to his reinstatement by the league. Williams was suspended by the NFL last April 25 and spent last fall playing for the Toronto Argonauts of the CFL. Williams' agent, Leigh Steinberg, told the Herald that his client is working on a book and wants to return to the league. "Ricky is in the best shape of his life," Steinberg said. "He's passed all of his drug tests and he's at a place where he's ready to come back to the Dolphins."