This statement bugs me because if they operate by exceptions instead of rules then they can do anything they want. I think it is the rule and they should clearly state that the rule is to only access data under subpoena and metadata at the customer's support request... or when feeding the NSA.
That's why anything with cloud to me means stay away. I don't FB, tweet, online game, or dropbox or anything of the sort. Most of that stuff is part of a corporate attempt to lure people into a pay always service/subscription to get your money or an easy way for agencies to spy on you and sell your info.