I am not convinced by the idea that this might be an unexpected engine failure. I cannot contest the differing thrust nozzle sizes but on the 'go-around' the subject aircraft is clearly (IMHO) making efforts to rejoin the formation leader. Why would he do that if he had experienced an unexpected engine failure? No, I think this is an undisciplined idiot messing around with his aircraft to the point where he could easily, as has already been stated, have become "a smoking hole with peripheral casualties." The running camera and bystanders seem to support that.