In 2011, HMP Birmingham became the first UK prison transferred from public to private sector, a high-stakes situation involving militant unions, a multinational corporation, traumatised staff, and intense media scrutiny. Everyone expected crisis. Instead, using Professional Dialogue, the handover was a non-event. Jane Ball, who led the six-month intervention, describes discovering fragmentation more extreme than anticipated: unions that never communicated, a hidden rank of Principal Officers with centuries of combined experience marginalised by restructuring, and managers in the same prison who had never met. Through carefully designed engagement sessions, collective organisational trauma was processed. Staff who had wept at the privatisation announcement began thinking constructively about the future. The paper offers a detailed case study in container development, dialogic discernment, and the practical skills required for intervention in volatile situations. Ball also reflects honestly on the prison's later collapse in 2020, a sobering coda to the initial success.