I did not took evidence. My fault on that one. But it is certainly not a degrading feedback without reason. The incident happened, I wouldn't find any reason to lie about it. If you will discard this as empty feedback, that will be your choice, but if you trully care about the faction, you'll simply ask about it in your Skype group.
Maybe the gank happened on that person, but he had no right to come back in snubcraft and even deny that he was not captain of destroyed LABC.