The owners of the Gaspé line plan to terminate the marketing and network operation agreement with CN by February 1, 2011. This article says they feel they can operate the line cheaper and market it better using local knowledge. The fact that CN uses unionized labour was also mentioned.
You may recall that CN was pulled off the maintenance of the line in April 2010.
I do question who is going to supply cars for them... I assume CN will still do that since the Gaspé line is captive to CN.