This is available to buy as a DVD from the Bigger Picture, plus the usual sources as well.
These are also the guys that did Lap of the Gods and Chasing the Dream, two good LM documentaries on Rollcentre.
I watched it last year, at times it is heart rending in it's sadness, but it does put to rest the question of what happened once and for all. It does, also, give a great insight to the mindset of the competitors back then too.
Well worth watching imho.