There's no question but that a lot of people are going to be delighted with the somewhat ironic turn of events, given the willful and fairly despicable slander engaged in by Mayweather over the past number of years.
That doesn't help the sport much, however. What we'll probably end up with is the can being kicked down the road, and some other major scandal bringing everything right back to the surface again. The pattern has repeated itself several times elsewhere.
If we don't get some clarification on the USADA contracts and protocols I'd rather GBP just stopped using USADA altogether. The only thing worse than the sport being dirty is the illusion of it being clean.