Thin Lizzy frontman Phil Lynott co-wrote this kiss-off song with Midge Ure, who would later tour with band as Gary Moore's replacement. Ure, who would soon form Ultravox, had a very unLizzylike sound, which was more in line with British new wave.
In our interview with Ure, he explained that he and Lynott were hanging out in London when Phil came up with this song. At the time, Ure was struggling to make ends meet, and Lynott giving him a songwriter credit was a huge financial boost. "I didn't really add an awful lot to it - he was very generous," Ure said. "He looked after me like a big brother."
"St. Elmo's Fire (Man In Motion)" was not written for the movie, but for Rick Hanson, a wheelchair athlete whose 1985 "Man In Motion" tour logged 24,856 miles on his wheelchair in 34 countries while raising $26 million for spinal cord research.