Somehow I missed this post before and it's too late to upvote it, but wow. I'll say this much: that was a far more stinging resignation letter than most of the ones I've written.
I couldn't help but be reminded of my entry upon leaving China, as you listed the cost of everything and totalled up the damage done, but that's another story. Anyway, props from topside for having the guts to stand up on principle and let everyone know that's what you were doing.