There is a circumstance where the mod is very popular, the author is very active, and the author wishes to do the patches himself (I'm thinking of a real life example here). In that case, you can make your own patch and use it, but we would prefer it's not uploaded without the author's blessing. In the case where it happened, the patcher agreed to allow the original author to upload on his own patch page. In my opinion, the original author's feelings should bear considerable weight in a case like this, even though the patcher's intent and action was not malicious.