derek skyler brux , 22 , pleaded guilty in january for unhitching a pair of locomotives and going on a high-speed run 13 miles down one of the busiest lines of track in the country .
brux then crashed into an inactive union pacific train at 10mph before backing up and then hitting it again .
derek skyler brux , 22 , was sentenced to five years probation for taking a train from a coal mine and crashing it into another train last fall .
he must also pay over $ 63,000 in restitution to rail link .