Weird thing happened to me on the weekend...My DSG RS stalled on me!

Here's what happened:
Started her up, warmed the engine up for a couple of minutes, flipped the air-con on, drove out of a carpark then stalled it taking off from the lights! I had to chuck it in park, start it up again and I was good to go.
Just to be clear I wasn't thrashing it and yes it was in Drive.

Has this ever happened to anyone? It kinda freaked me out.
The car has only done 45k and I treat her pretty good, so there's no reason why this should happen.