An emergency court hearing may be needed to ward off the largest shutdown in recent memory on Australia’s busiest train network. Trains from Newcastle to Wollongong and across Sydney are due to lay dormant from Friday morning until Sunday night amid an escalating pay dispute between the New South Wales government and drivers. But early on Wednesday morning Transport for NSW said it had agreed with the Rail, Tram and Bus Union to run services on Thursday, a relief for Pearl Jam concertgoers who would have had to find alternative transport to Sydney Olympic Park in the evening. The Labor