Re: The Cure from X Men The Last Stand: mentioned in Wolverine...
Yes, but Yashida, as mentioned, was obsessed with mutants. The cure would have been big news concerning mutants and world affairs, whether it worked or not around the events of The Wolverine. Considering Viper worked for him and she was a scientist mentioning it would have only been plausible.
"And a man, a man provides. And he does it even when he's not appreciated, or respected, or even loved. He simply bears up and he does it. Because he's a man."
- Gus Fring