RIP to the two chaps involved.
Bonso was a lovely aircraft always looked after with no expense spared (certainly in GA terms). It was always a great experience and flown from a brilliant little club. I did my PPL on that particular Firefly after switching my UAS/EFT hours into a civilian license and was very sad to hear the news.
I can't imagine what it was like there on the day - sounds like it was handled as well as could be.