I have the impression, that the loop was not properly executed and was not in plane - thus making the plane cross the road instead of flying past it.
Watching the video it looks like the plane came out of the loop at lest 45° to the entry line.
Sky News interviewed a display pilot who explained the loop maneuver. You have an altitude 'Gate' at the top, and if you are below it you can't complete the loop. The normal procedure is to roll out on the 'closest' horizon and take it from there.
I wonder if the pilot was trying to save the plane by lining up the road. During the final pull-up the plane was almost exactly lined up but ran out of altitude. An ex-military plane should have good aileron authority at high wing loading, so a roll-out should have taken less altitude than completing the maneuver.
---------- Post added 08-24-15 at 02:48 AM ---------- Previous post was 08-23-15 at 03:04 PM ----------
This video shows a flash at 0:51 shortly before the plane reaches the top of the loop. That would explain why the plane slowed down so much just at the critical moment. If the engine had held out for another two seconds the pilot would have more options.