Fine, Joe. When someone rolls over, or some evidence emerges, then get back to me.
You mean when
another person has rolled over and
more evidence emerges?
Donaghy has "rolled over" and it's time for someone to investigate his claims. The referees he fingers need to be questioned, investigated for a history of improper conduct inside and out of their officiating duties. One of the things that made Donaghy stand out were his fouls-called-per-quarter ratios (or whatever you want to call it), which were far outside the normal range.
The game he refers to was evidence. The vast majority of it's viewers felt there was something abnormal about the officiating and Ralph Nader requested a formal investigation. An investigator can look into similar games with lopsided foul calls (Suns vs. Sonics) and see if there is a pattern of referees, team popularity, etc.
Donaghy's story also needs to be examined from the other direction. Does he have much to gain if the claim was false and thus unprovable? If two of the refs were prepared to hand that game to the Lakers, would one of them tell him about it? Unlikely, but certainly possible if they had a close relationship. Did this ref ever tell Donaghy about other improprieties? Did Donaghy tell him about his own game fixing schemes? Donaghy may have simply chosen this game because of it's infamy or because of a dislike for two of the officials.
So, there are already vague claims and limited evidence. More may pop up as long as this issue is investigated further by the FBI. Currently, there is no reason to either dismiss his claims or, conversely, assume they are true. Your statement that his claims are unprovable is false. They are only unprovable with the limited data (the game) we have looked at so far.