Is this possible?

Hey all, I just bought ftb3 and I got the activation code. Since i have cfw is it possible to activiate the code via my psn account then return the game considering I no longer need the umd? I bought the game from gamestop and I have all the original wrapping. Also, is it possible that when they record it back in inventory the activation code somehow becomes deactivated because i returned it?

i highly doubt it since the code is not associated with gamestop but the game its sself or psn

Nope u prolly got put on punishment for haking in a rank game