Deep Sigh.
I was being dim. Very dim. And missing something obvious. Very obvious.
It's right there on the submission page: a prominent, bright green button bearing the legend "Edit this submission"
DUH! Sorry.
-- SOLVED --
Good job fixing it yourself.
I'm up to my 5th bugfix, but content updates are allowed also.I had inspiration at 5:00am today so the 6th fix will be done soon.
