A man who went “off the rails” following a break-up was caught with cocaine just weeks after being warned against any more crime. Shaun Wilkinson, 35, of Bransby Close in Lynn, pleaded guilty to two offences when he appeared at the town’s magistrates’ court on Thursday. He admitted possession of a Class A drug, as well as being drunk and disorderly in a public place. Wilkinson had been on Norfolk Street in the town centre shortly after midnight on May 27 when police officers’ attention was drawn to him. They felt his behaviour was “erratic”, and upon speaking to him and conducting a search the…