i've been a bad girl
I fooled around with my edit_entry.tmpl file. I was trying to add a blockquote option. I fucked up. My edit entry screen looks like this. Obviously, I can still post, but I'd rather not have my dumb mistakes staring me in the face every time I open this page.
Anyone? Help? Please?
[I will now go write on the blackboard 100 times: I will not mess with my MT templates]
UPDATE: Thanks to Ron Bailey, it's all better.