ooooooh.....touchy-touchy AMF!
In the UK there is a committee called the
UK Airprox Board convened under the UK CAA.
When an airprox is reported it is investigated and they produce a report and make recomendations where necessary.
I don't think my mate expects a hand written apology - he was curious as to why it happened. He was the only a/c on approach at the time and was baffled by JFK ATC's decision to vector a Piper Cherokee directly through his approach 500' above him. Apparently its legal - but still, stupid under the circumstances, I'm sure you'd agree.
The fact is that in the UK (and in most of european airspace) this incident would have been investigated and a report produced, possibly improving future safety awareness for all. You might even have been told about the outcome by your Chief Pilot.
That is - if you are a pilot.
I doubt it given your enthusiasm to blame my mate for his incident - even when you had no details.