Equally, had UPY got off the ground and into the circuit without radio calls, I would expect that, or the point at which he went silent to be mentioned - I'd expect a bigger deal to be made. Basically it's ambiguous - which was the point I intended to make, even if I put my 'reating between the lines' interpretation on it.
I see nothing wrong with the tracks/positions, though they're obviously representative, rather than radar traces. I admit I'm confused by the damage / reported contact vs the diagrammed positions and avoiding action, but it also seems that some folks have a version in their own heads, and the prelim is insufficient to draw firm conclusions from. Accordingly I shall disappear again and await the full report.