Without being able to see the film,..
Is it possible the pony driver scored a head shot and the software order of execution left the graphics in place with no longer rendering damage?
So, basically, the pilot was dead ( since there's no debris other than the wheel, this would point to a dead pilot ) before the planes 'collided.'
Eventually the damage resolution got around to removing the plane graphics, but it would be right after the collision?
Just a thought.