Done similar myself with a Passat. Fortunately (if that is the right word) I noticed it as I holstered the filler, so I didn't start the engine. Sadly had to pay for a full tank of petrol, then had to sit in the car on a busy forecourt for an hour (sat in the passenger seat, but still had funny looks from other drivers who pulled in behind me thinking the car would move soon) to await the rescue service who towed me to my dealership.
Hope all goes well for you, and do keep us updated.
Alex
Will do Alex, everything is crossed at the moment...