What technical director of FC St. Pauli was seriously injured in a foul in 1981?
Ewald Lienen
Title: Borussia Mönchengladbach 12–0 Borussia Dortmund
Passage: On 29 April 1978, the final match day of the 1977–78 Fußball-Bundesliga season, Borussia Mönchengladbach played Borussia Dortmund with the possibility of winning the Bundesliga championship.  Knowing that if 1.  FC Köln won their game away to FC St. Pauli, Borussia Mönchengladbach would have to win by a margin well in excess of ten goals.  The match finished 12–0, which remains the largest margin of victory and biggest win in Bundesliga history.  However, 1.  FC Köln beat FC St. Pauli 5–0 to become champions.
Title: Ewald Lienen
Passage: Ewald Lienen (born 28 November 1953) is a German former football player and current technical director of FC St. Pauli.
Title: Norbert Siegmann
Passage: Norbert Siegmann (born 20 May 1953) is a retired German football player.  He spent 11 seasons in the Bundesliga with VfB Stuttgart, Tennis Borussia Berlin and SV Werder Bremen.  As of February 2009, he is managing the low-level amateur club SV Weser 08 Bremen.  He is probably best known for seriously injuring Ewald Lienen in 1981.  That foul was called "the most well-known foul in the history of Bundesliga".
Norbert Siegmann Ewald Lienen