Awful. And as others have already identified, very similar to GW in 99. A common factor is the difficulty of having a meaningful 'gate' in a rolling manoeuvre - a gate height is only valid if the subsequent roll and pitch rates match those for which the gate was established - roll (out) too slowly or pitch (down) too fast and disaster beckons, irrespective of any preceding gate. So in other words, a gate is no guarantee of safety in a barrel roll or similar manoeuvre - and can even create a false sense of security.
The shame is no-one needs to see extreme manoeuvres from classic aircraft - they can't compete with modern, agile ac - their appeal lies in their classic lines and their sound - IMHO a flat display with lots of plan form passes would keep the crowds perfectly happy.
Thoughts with all involved.