This condition happens from time to time - as we have some automatic spam catching software running - so every so often a certain member, for a variety of reasons including name choice, improper registrant info., or posting internet links, etc., will get flagged as a potential spammer. We try to work diligently to correct this, and in your case I think you should be good to go now. Nothing personal, just a computer robot misinterpreting your posts.
We have it set to pay particular attention during a new member's first 3 posts, so members cannot post internet links or say certain keywords in their first 3 posts, this is to keep spam off the boards.