Someone recently edited an answer I wrote earlier today:
https://math.stackexchange.com/a/969737/155629
Usually I'm happy to receive edits, but in this case the edit does not reflect the intention of the post, and the tone ("much much much weaker"), punctuation (!!), and formatting (one sentence all bold, another all italics) are distracting and anyway aren't consistent with the rest of the post, all of which make the answer less professional.
Is there any etiquette that applies to undoing manually these sorts of unwanted changes?