Does anyone have any more info on the N2626N crash?

[VFlyer]

It happened about a year ago and stirred up a lot of the forums talking about it. To those who don't remember it was the one in Florida that had the main rotor blades fly off mid flight (R22) with a very experienced pilot at the controls.

 

Curious if anyone followed this and could share what the most likely cause was and if it could've been prevented in any way. I will be flying in Florida for a bit, and this happened close to a friend of mine who was somewhat shaken up. Hasn't left my mind and I'd like to know where the discussion ended up if anyone knows.

 

From what I could find on the NTSB the current determination is: "Mast bumping for reasons that could not be determined because one main rotor blade was not recovered"

 

Thanks!