Prison officer Katie Evans, 26, boasted about performing a sex act on an inmate and was told by a judge at Sheffield Crown Court that she will go to jail.
At a forthcoming parole hearing, a former senior prison officer once held hostage at knifepoint by the veteran jailbird (pictured) has softened his position, which could prove pivotal.
A prison officer was horrifically slashed across the face by violent prisoner Martin Bates, who is serving life for murder in HMP Wakefield, with an improvised weapon made from a disposable razor.