In October and November 1997, Þorvaldur underwent a trial at Sheffield United[1] and Stoke City[2] but was not signed.
[8] In June 2004, Þorvaldur collapsed during the middle of a game between Fram and Fylkir due to what was initially thought to be a severe migrane.
[9] In July 2004, he announced his retirement from football due to a brain injury caused by several blows to the head over his career.
[11][12] Þorvaldur won one cap for the senior Iceland team, in a 6–1 friendly defeat to Brazil in Brasília on 8 March 2002.
Þorvaldur's wife Katrín Jónsdóttir was the captain of the Iceland women's national football team.