'tis a very sad story, indeed.
It's a worry when such an august organisation will quote the bollox I write here on PPRuNe though...
Interestingly though - remarks on Nolan Law Group (NLG) "Air Accident Digest" as follows:
23 Feb. 1740LClyde, Victoria
Van’s RV4Reg: VH-ZGH (tbc)
Seen in an unstable spiral shedding tailpieces in the local "aerobatics box"
2 dead/2 onboard
RV4 with two 116lb people and >22US gals exceeds the aerobatics weight limit.