No. Its because you are a totally irrelevant person. Have you any idea what you are asking?
You're asking for the leader of a major alliance to leak confidential talks that he had with another alliance leader. Should he leak this, this therefore means that other alliance leaders will be less inclined to speak to him, because they have no guarantee that what they say will not end up on the forums. No serious alliance leader would ever consider revealing these things to a general member not even in his own alliance (except a certain ex-leader of TCW ). These backroom conversations are none of your business.
No doubt it would be interesting to know all these things, and no doubt it would be beneficial to Quack's cause, as further evidence of what we already know. But just because you want it, doesn't mean you will get it, because ultimately, its none of your business. Your job is to fight wars for your alliance (which you have failed to do, I do hope you're on the No Pixel Order list) -- not to engage in pointless "investigation", weeks after the war comes to an end.
What do you hope to achieve? For the anti-quack coalition to say "oh, sorry, yes, we were going to attack Quack"? That's water under the bridge -- come the end of the NAP in April, there will be new tensions, and new conflicts as the cycle goes on and on. We may even find ourselves fighting alongside the same people we were bitterly arguing with just a few months prior.
Seeking proof involves the ability to admit you are wrong.