German raider boasts of machine-gunning English women?

[Bombphoon]

The 2012 book Soldaten by Sönke Neitzel and Harald Welzer, published by Simon & Schuster, uses the transcripts from the German POW cage at Trent Park, north of London. German POWs were secretly bugged to try and draw military intelligence. However, it soon became clear they were also providing confessions of war crimes. An excerpt states:

'We once made a low-level attack near Eastbourne,' recalled a pilot called von Greim. 'When we got there, we saw a large mansion where they seemed to be having a ball or something; in any case we saw a lot of women in fancy-dress, and an orchestra. We turned round and flew towards it. The first time, we flew past, and then we approached again and machine-gunned them. It was great fun!'

Does this incident or the pilot von Greim tally to known records? Although it could be from any time between 1940-1943, it sounds like a hit and run raider, possibly SKG10?