sentences:  Voting against one's own party is an expellable offence in the Labor Party; the only other NSW Labor MP to have opposed his own party in a party-line vote was George Petersen, who was expelled in 1987 as a result.As debate on whether to expel Arena continued within the Labor Party and in the press, the Wood Royal Commission released its findings, clearing Arena's accused and ridiculing her allegations of a political cover-up.Arena resigned from the Australian Labor Party on 7 November 1997, but continued to serve the Legislative Council as an Independent.