I think P&M have caught about the only lucky break (bad choice of words, maybe) of the week. Nothing (apparently) is broken. As Kenny Duttweiler explained it to me, the plate that holds the shift actuators in place shifted (another one) slightly and when George attempted to go from 2nd to 3rd, the transmission went out of 2nd, but due to the movement of the actuator plate, couldn't engage 3rd. It ended up in neutral, instead.
They're preparing to run again.