It's only because Vito was released from prison that they're making a big deal out of this. We don't even know where he is or what he's doing. He hasn't been free for even a week, I doubt he's had time to go about with revenge. I remember Carmela saying something about Sicilian men being patient with revenge, but they don't ever forget it. However, this incident seems more like a conicidence than mob-related.