Probably. One of the statuses on the facebook page begins "All we can hope for in life is a strong moral compass that helps guide us in doing the right thing and when something happens that might seem unfair we need to realize that those incidences are in the minority."
Of course, since they're saying that "Starbucks has informed me that they will be shutting off the card", it's also possible that Starbucks has some reason to shut it off that's entirely unrelated to that.
I'd imagine Starbucks was loving the free publicity as long as it was working, but when things started to turn sour they didn't want the controversy and decided to assert their rights.
The social media team at Starbucks struck me as being fairly social-media-savvy. I have some doubts - or at least a lot of confusion - over why they'd want to shut this down now. The publicity wasn't _that_ negative. It seemed like they stood to gain a lot for it continuing to work out too.
But I suppose we'll never know the true story. Whatever the case, I think it's a sad shame.
(I also hope this doesn't kill Jonathan's spirit.)
I don't think they can, or would want to, kill the idea— I think (assuming it's what happened) they shut down Jonathan's Card, which we know is being actively skimmed, to nip the negative press in the bud, secure in the knowledge that copycat projects will (and already have) swoop in and pick up the torch.
Of course, since they're saying that "Starbucks has informed me that they will be shutting off the card", it's also possible that Starbucks has some reason to shut it off that's entirely unrelated to that.