While editing one of my questions which got Roomba'd, I got a "This post has been deleted - no more edits are allowed" banner, and the 'Save Edits' button was disabled:
As mentioned here, I could copy the content, go back and edit the question again; this time I didn't see the banner and I was able to submit the edit. But both that bug and this one have been marked status-completed in 2009.
disabled="disabled"
. Then you can edit it.