This sounds like a complete violation of privacy to me! Scary scary scary! You never know what kind of weird people are out there, who's got restraining orders, stalkers, etc. Sounds dire, but you never know and you can't be too careful. I've had actors go so far as to tell me that I am the only one who can have access to certain numbers (such as work numbers that are emergency only because they don't want to be bombarded with calls, or cell phone numbers because they've had problems with stalkers before, etc.). I would never think about posting a contact sheet in plain view for all to see! I keep them under lock and key when not in use at the theatre, and on all contact sheets, or anything with identifying information on it, there is a big note on every page that says, "all contact information is confidential and may not be distributed without prior consent from the individual." Unless they sign a release at the beginning of the process that says the theatre is at liberty to release their contact info or something like that.
I don't even know the show in question or anybody involved and I am scared for them! If I were you, I would say something to theatre management -- whoever your supervisor is (is there a production manager?) Don't talk directly to the stage manager since you really don't have any authority or jurisdiction over her.
Before you give out emails or phone #s for future work and possibilities, you should always contact the person first to make sure its okay. I have certain people in my address book who have given me a blanket OK -- anytime I want to recommend them for something I am more than free to distribute their emails and phone numbers. But others I know want to be asked -- for whatever reason. We should always work to respect those requests and people's right to privacy as much as possible.