Dear PJ,
I wouldn't dispair too much from this at least you got to this stage of the selection process.
I was advised recently by a chap who recently did this for JMC and succeeded in getting a job, that your initial bash at the sim ride is supposed to be a complete F*** up, and it is the subsequent attempt that is more keenly observed to see how quickly you get on the learning curve.
better luck next time
cheers
MJR