SQL Server 2005 :T-SQL pour désactiver temporairement un déclencheur

DISABLE TRIGGER { [ schema_name . ] trigger_name [ ,...n ] | ALL }
ON { object_name | DATABASE | ALL SERVER } [ ; ]

http://msdn.microsoft.com/en- us/library/ms189748(SQL.90).aspx

suivi de l'inverse :

ENABLE TRIGGER { [ schema_name . ] trigger_name [ ,...n ] | ALL }
ON { object_name | DATABASE | ALL SERVER } [ ; ]

http://msdn.microsoft.com/en- us/library/ms182706(SQL.90).aspx