Forecaster who was dismissed, as cads ran organisation (9)
I believe the answer is:
cassandra
'forecaster who was dismissed' is the definition.
'cassandra' can be an answer for 'forecaster' (I've seen this before). I am not certain of the remainder of the definition.
'as cads ran organisation' is the wordplay.
'organisation' indicates an anagram.
'as'+'cads'+'ran'='ascadsran'
'ascadsran' anagrammed gives 'CASSANDRA'.
Can you help me to learn more?
(Other definitions for cassandra that I've seen before include "one anticipating disaster" , "Prophet of disaster" , "Prophetess during the Trojan War whose predictions were true but never believed" , "Greek who predicted" , "Prophetess and Trojan princess" .)