 His career was halted in 1997 when he was diagnosed with Non @-@ Hodgkin lymphoma . He attempted a brief comeback in 1998 after an 18 @-@ month battle with the disease , for which the NHL awarded him the Bill Masterton Memorial Trophy , before retiring to serve as an assistant coach for a year with the Lightning . Cullen played in two NHL All @-@ Star Games in his career . He joined his brother in the car dealership business after leaving the game , and briefly operated his own dealership until forced to close during the automotive industry crisis of 2008 – 10 . 
