I've been able to slow it down by carving but it will not work for a sudden stop. It takes some patience, confidence, and control but it's possible to slow it down from 30 mph. I've stopped it a few times sliding it perpendicular to my momentum. I can't remember, is that still called a shred?
Another negative with the T-board I forgot about, I have pinched the wheel against the board twice. It threw me over the top like if you folded the nose of your snowboard.