I think the Pistons made a big mistake to pull out that trap in a game when they were so far out of it. He showed it to the C's, and now they have an extra day to work on strategies to beat it. There was no way they were coming all the way back in that game, so he just wasted the chance at surprise.
This was a simple zone trap, and they don't work in the longrun in the NBA (just ask Rick Pitino). This will really be a test of Doc, because he needs to implement a way to beat this press, because they will see it again. But I am confident that they will have implemented a way to beat it (probably with KG catching the ball at the top of the key, and being the point man to find two guys in the corners behind the defense).
My only worry is that Detroit hits their shots. If they hit their shots, it makes it nearly impossible to stop them, and also hurts the C's offense, because they can't get the upquick off misses.