I accidentally posted a question this morning without a header, so I redid the post, added a header and posted it, thinking I could delete the first post...but alas, am unable to figure out how to do that other than just remove all the text. So now there's just an untitled and empty post. Sorry! How can I remover the first post?

Just look underneath the post for the "Suggest a Change". Click on that and you'll see several options including asking a moderator to delete the post for you.

I submitted a proposal to delete the blank post.

I've deleted the thread.

Just posting here in the Site Talk forum is best as admin frequent this thread and we can quickly fix things.