Without knowing athlete I do think that he is not dishonourable. His actions in game might be, but I think that is more due to him taking the "best" action for his civ - unfortunately often shortsighted. And that he also trys to win the game whereas many people here rather would lose then to act dishonourable. And when you try to win but (especially diplomatically) act shortsighted you might often be "forced" into dishonourable actions.
I do not think I would have acted that way myself but I can understand why he does.
I do not think I would have acted that way myself but I can understand why he does.