In the meantime, for the rest of us, there's an extensive discussion in the report on the pilot's options following a partial or complete loss of thrust at various stages of the manoeuvre - none of them involving loss of control.
Why does it matter? Well, because if it was in truth a technical issue which put the pilot unknowingly into the fateful position, and under pressure he made the wrong call without fully appreciating what had happened, it is hardly a unique scenario. Like everyone else, Pilots are not infallible, and under duress can get it wrong and it is reasonably foreseeable that they might. The tragedy which unfolded has as much to do with the decision to have a display of that type in that place, as it does with what did or didn't happen during the fateful 4 seconds.
Guys, I accept there was less thrust than required during the first half of the loop - be that an engine abnormality or pilot action. However, apart from the secondary consideration of line feature/rollout track and perhaps the required exit speed, the primary concern
before reaching the apex is
gate parameters. The whole reason behind having a gate is to stop you trying to finish the loop without enough sky below you. As mentioned before, the apex gate is not a snapshot, you can clearly see it coming well before the apex if you are 1000ft low. To continue after being say 100ft low is naughty, and going to be a late call, but you miss it by 1000ft! Furthermore, 4 sec is ample time to recognise any gate error and then stop the loop. You are already expecting to make the appropriate decision. Again, mentioned in detail before, unload and roll out. If too slow, keep a bit of pull on, nose below horizon, IAS rapidly building, unload then rollout.
If we are going to conclude that 4sec might not be enough time to assess, and then action a recovery then that will be the end of any looping at air shows. AH wasn't the first and won't be the last - but he crashed because he
continued his loop despite having failed to achieve his gate. Had he not failed to achieve his gate the accident would not have occurred, but as to why he failed to achieve it, that's simply an observation.
Gate parameters - it's really that simple!