Come on PuertoLibre, its posted by a guy with 4 posts, talking about his "friend" with a few screenshots. Who knows what his "friend" did or who he gave access to via the API. Its a little flimsy for be to believe anything this guy is saying.
Did he also fake the receiving address amounts at roughly the same time frame?
sounds like they went trough the API this would allow them to mess up the transaction fees.. the only transaction fee you can choose is a tick box of 0.005 so its either a server exploit of API exploit both of which could or couldnt be your friends fault but should be serious concern to mtgox..