Mass revert to original post after edit

[ldma]

I have a small problem with a user who prior to flouncing from the forum changed all his posts to give the url of a rival forum. Yes I could just delete them all (and will do that pending any better options), but it has got me wishing there was a way to mass revert a given number of posts to their original edit for cases such as this.

Is there anway this can be done at present? Even a one-by-one would be good, but copy-pasting the original edit back to the edited post is too much trouble.