I think the deal is officially dead. The @Gamer employees at my store knew nothing about it. They tried scanned and ringing up the transaction, but it came up as full price. They were really nice though. Showed them the twitter post and the guy just pennied out the magazine for me. Told me since twitter isn't 100% official for them they probably wouldn't honor it in the future, but did it for me then.
For Sale: Indie Gala Flash, Dwarves, and Mass Effect BTA Bundles - $2 Each - PM if interested