They never let me know what the inappropriate content was. The page was restored with all the history/content intact and all likes intact. Yes I am very concerned and paranoid it could happen again and I've really locked down my page a lot more that I probably would have otherwise. For example I don't let users post to our wall anymore, they can only comment on our own posts.

Even before we were mysteriously blocked I never let users post photos/videos to our wall and obviously we'd never allow any inappropriate content there.