CREATE TABLE table_22848931_3 (manner_of_departure VARCHAR2, date_of_vacancy VARCHAR2)

Name the manner of departure for 1 december 2009
SELECT manner_of_departure FROM table_22848931_3 WHERE date_of_vacancy = "1 December 2009"
SELECT "manner_of_departure" FROM "table_22848931_3" WHERE "1 December 2009" = "date_of_vacancy"