Djerv 1919 were relegated in 1993, Grindhaug crucially missing a penalty kick in the last match of the season.
[1] Grindhaug played regularly until the summer of 1998, when his career was halted due to knee injuries.
He trialled at several clubs, turning down a contract offer from Beijing Guo'an before injuring himself in a trial match for Umeå FC.
[3] One month before signing Grindhaug, FK Haugesund had looked to hire Conny Karlsson;[4] Other candidates were Roar Hansen, Jonas Wirmola and Kjetil Knutsen.
[1] On 21 September, Grindhaug was demoted to backroomstaff for Haugesund and his assistant Mark Dempsey took over as manager.