Eden Prairie, Minn. ? Karl Kassulke, a former Pro Bowl safety with the Minnesota Vikings whose career ended when he was paralyzed in a motorcycle accident, has died from a heart attack, the team confirmed on Tuesday. He was 67. Kassulke died in his Eagan home on Sunday. He spent all 10 years of his career with the Vikings from 1963-72. Considered one of the hardest-hitting defensive backs in franchise history, Kassulke started in the 1970 Super Bowl loss to Kansas City and was named to the Pro Bowl the following season.