Well, that was my thinking... And if the engine was running, the pins would have already been removed, at least that was the case when I was Tornado F3 Groundcrew...
I am currently on a course with someone from the 'Flight Safety Investigation' branch of the RAF, and have been privy to some info that should be in the Service Inquiry, so I will not detail it here, in case it is not suitable for 'public release'.
Suffice to say (as always) there are lessons that can be learnt.