My memory might be deficient, but I remember it like this (paraphrased):
WotC said "you're in violation"
Jim Ward said "uh, I didn't understand the OGL"
WotC said "well, make sure you do"
Jim Ward said "okay, okay, okay ... hmmm ... I'll just destroy the damn books then"
Jim Ward then implied that WotC forced him to destroy the books, but reading his communication to the public carefully revelead that he himself took that decision. WotC did not make him destroy the books. But Ward really, really wanted people to interpret the situation that way.
At least that's my recollection of the incident.