I'm not sure what the terms being open to negotiation is meant to prove though. The underlying point is that Wizards attempted to coerce publishers into new licensing agreements based on the threat that the OGL would be rescinded and replaced with something similar to 1.1. Even if the details of the new agreements were open to negotiation, Wizards clearly intended to revoke the OGL and was actively using the threat of this unethical (and likely unlawful) action as a means of gaining leverage over publishers.
¯\(ツ)/¯
Like I wrote, I don't understand why people are debating this - after all, it's in the past now. Nevertheless, it's always good to try and be factually correct.
PS- Contract disputes are not unlawful. As for ethical, who knows? I'm sure Milton Friedman might have a different view than you and I do.