I don't know where the idea of stunts appeared from but my understanding was that he was testing a Super 3 NOT attempting a ground loop or any other stunts in it....
The paucity of information from Auntie shouts subjudacy and legal processes pending.
As far as the other media reporting goes - when they have nothing to go on they transmit nothing based on facts but their own speculation, as the Beeb is in a league of own doing this it just amplifies to me is that Houston we have a problem..