Here is the actual letter by The We Are A.R.T./New York Coalition.
It is very well written and lays out the issues with clarity.
And Louloudes herself is quoted, surprisingly indicating that she understands the need for her resignation:
"You know, I don’t feel like I should be running A.R.T./New York if you’re going to shift the power. You need to have somebody else running A.R.T./New York.”