Well, I'm not JT, but I think his website might be getting updated. When he first introduced it, you could get on and surf with no problem...
As far as the T-shirts, JT did leave a post on BART saying to check Frisco Street Show, because they might have some shirts left (
www.friscostreetshow.com). Here's their #: 1-650-588-6033.
PEACE!