Don't worry about the possible "passive aggressive" interpretation. You are doing the best that can be done in your position. If they don't see it... well, that

Don't worry about the possible "passive aggressive" interpretation. You are doing the best that can be done in your position. If they don't see it... well, that's their problem, not yours. You are already being more than enough accommodating by just accepting to work on such a mess of a project!