DLC is yours to keep when your PSN+ expires, as long as you had it installed. You won't get to re-download it, but if it's already -part- of the game they can't take it out.
I still had my God of War DLC and my Killzone DLC when it expired once. --- Welcome to Gamefaqs. Stick your fingers in your ears and pretend you can't hear other people's opinions and call them trolls. http://nineteenth.wordpress.com/