Remember, you put the content on MS's servers, and by doing that you bound yourself to the agreement you checked--'I agree'. MS has worded their TOS in such a way that they can and will remove any content they wish to and do whatever they want to with it. If I were you, I would've backed up the information--especially since it is in regards to infosec, which can be a touchy topic--and especially since its on MS's own servers. At a risk of being redundant, sueing (sp?) MS for something like this seems impossible. 'They' can stack years of papers and lawyer's fees on top of you, remember Erin Brockovich?