You were giving him a week's timeframe for a reply. In that situation, it is reasonable to go ahead with the edit without waiting for you. I agree that as a general courtesy, one should not edit while the issue is being discussed. But this is not necessary. Edits can also be made while the discussion goes on. This is particularly true when one party seems only interested in preventing others in getting anything into an article. If one party is rejecting the other users proposals without having any credible reasons, or in a hypocritical way, the edit can go ahead.-