DC Metro is pretty pathetic

In October, DC Metro began a random search program without public input. Flex Your Rights stepped up and started passing out flyers at subway stations informing people of their rights not to consent to a search, and got a lot of positive media coverage. In the next month, Metro refused to debate the policy and has been challenged by the Riders Advisory Council to come up with justification for their policy.
Backed in to a corner with no justification and bad publicity, what does Metro decide to do?
Threatens to sue Flex Your Rights for using the “M” logo (yes, the one shown in this post) on their information flyer.