Dave Williams is a Liverpool-based Unite union stalwart and former member of its executive council. When Skwawkbox writer Steve Walker was chair of a Liverpool constituency Labour party (CLP) in the Corbyn era, Williams was the CLP’s ‘TULO’ (trade union liaison officer). He has also been an ardent supporter of Unite’s general secretary Sharon Graham. And when Skwawkbox started to expose Graham’s failings and misdeeds as Unite general secretary, Williams was highly critical of it doing so. Very highly critical. But now he has, very publicly, changed his tune. With Graham in the middle of a highly-criticised re-election campaign and reeling…