You did give legal advice, dude. Here's some legal advice for you to protect yourself in the future, a disclaimer you can place before you do something similar in the future: "The following [X] is/are not legal advice. It/They is/are intended as background material for use in preparing to knowledgeably discuss the situation with the lawyer who will be representing you in this matter."
I know for a fact that this language is sufficient in the Sixth Circuit. YMMV, but a disclaimer is a very handy way to shield yourself. Jsprinkles may disagree, but I've seen and handled cases in which disclaimers were the only thing saving someone from a ruinous malpractice suit for stuff they posted online (or published).