First of all, I don't really know you. Second, I don't know the person the beware is about either. You two could be brother and sister for all I know.

I'm not saying this because "omg drama" or because I hate someone, and I am glad you are taking back what you said, but I do think it's wrong that this person is now going to have a mark on their "record" for doing this and a warning for having done it when in fact no such "crime" took place and the evidence provided was faulty.

I believe that it happened on accident, I forget to constrain proportions when I resize things all the time, but I think that you should tell the admins that you were wrong too.