Withholding judgment, but I sure wouldn't have posted anything that I was afraid could be used against me. It doesn't happen often, but there have been instances of people finding their ex's threads on here. Normally it's not much of a risk, but you've posted lots of details in other threads.
You can edit your posts, but I don't know if others will edit their quotes of your posts.
You can edit your posts, but I don't know if others will edit their quotes of your posts.