At any rate, in an effort to be fair and balanced, here's their open letter.
And FWIW here's my open shout out to the AMPTP:
Will you guys (or a reasonable facsimile and representative thereof) appear on my podcast and have a chat? I'm not a WGA member, but in an effort of full disclosure, as a member of SAG I am WGA sympathetic. I'd really, really love it if you came on my show and answered a few questions. I want to help you tell your story. And just so's you know, you would be considered a guest on my show and afforded all the respect due as someone invited into my own home.
Think about it.
This is an open invitation.