Yup, this is real.
Yesterday morning, I had a notification on my phone that my account was now at $0.00. HUH??!
Launched the app and then noticed my Starbuck's card was removed. WTF?!
I called their support line. They didn't offer much in the way of help, but did say that the email address had been changed on my card and that it was indeed removed. They reset my password and are sending me a new Gold Card.