cazatou, the two accidents are not related in any form whatsoever.
Until we are informed by the first BOI, it is unknown if AAES operation was attempted or not.
As for the Scampton accident, Zero-Zero ejections are exceedingly rare, usually the preserve of Harrier incidents in the hover (and the zero in height is always a negative due to sink rate, although the aircraft is positive in height). Ejections at zero speed on the ground are usually only test fires by Martin Baker or other seat manufacturers. Only other I'm aware of was Greg Nobles in 1996. However the seat was fatally compromised by impact damage prior to his attempted ejection. I saw the remains of the seat and the aircraft as crash guard, 1 hour after the accident happened, with all items where they ended up. In a zero-zero ejection, other dynamic forces that would affect the seat on engress and parachute deployment in other flight regimes do not exist.