Maybe something about him giving it to her TWO DAYS before the wedding played a part in this.
The question is... was the prenup a completely valid contract at the time it was signed?
A contract can be invalid if it is sprung in a way that does not give the other party time for "due consideration". Two days before a wedding wasn't enough time to get her own lawyer to go over it.
Of course the story doesn't say that there was NO discussion regarding a pre-nup until it was given to her to sign. (Gee... did the MSM do this hit piece against the man?) My guess is that if they were getting married they talked about these things many months, if not for years, before the final contract was presented - two days before the marriage contract was executed.
Of all the I've dated women I always bring up the financial issues for discussion in detail, and how things will go (although I don't ever want a pre-nup and I have plenty to loose), if marriage is to be considered.