Consider the question. The Man from Snowy River is a 1982 Australian drama film based on the Banjo Paterson poem "The Man from Snowy River". Released by 20th Century Fox, the film had a cast including Kirk Douglas in a dual role as the brothers Harrison (a character who appeared frequently in Paterson's poems) and Spur, Jack Thompson as Clancy, Tom Burlinson as Jim Craig, Sigrid Thornton as Harrison's daughter Jessica, Terence Donovan as Jim's father Henry Craig, and Chris Haywood as Curly. Both Burlinson and Thornton later reprised their roles in the 1988 sequel, The Man from Snowy River II, which was released by Walt Disney Pictures.

Who played spur in man from snowy river?
If the answer is 'Kirk Douglas'; explain the reasoning:
To answer this question, we should know that: Released by 20th Century Fox, the film had a cast including Kirk Douglas in a dual role as the brothers Harrison (a character who appeared frequently in Paterson's poems) and Spur, Jack Thompson as Clancy, Tom Burlinson as Jim Craig, Sigrid Thornton as Harrison's daughter Jessica, Terence Donovan as Jim's father Henry Craig, and Chris Haywood as Curly.