This news doesn't surprise me at all. It really doesn't.
Let me remind you that when One Piece was on Toonami, people were racing to be the first person to post an official episode talkback. So naturally in an attempt to be the first person to beat someone to the punch, we have this. And to add to his or her ego, they did it to an official company who is known for cracking down on fansubs and fandubs (as a matter of fact, the Funimation blog even did an entry on this division within the past month). We know people are seeing this illegally anyway so it was only a matter of time before someone was greedy enough to go ahead and do something like this. Right now, I bet Al Kahn is laughing his butt off over this childish act.
Also, the person leaked Episode 403. Even though I'm not a One Piece fan, I know we're not even close to that nuraber here in the US. Therefore, people should not even watch One Piece that far to begin with. It's a shame, however, that these people who do are vocally praising OP and probably the main reason the show is licensed to begin with. Nevertheless, they shouldn't spoil themselves and give fandubs/fansubs the ammo that lets them do such a thing.
Some good points have been made so far but as for what people should be doing: I told the Geass fans at the Adult Swim to put their money where their mouth is and support the company in response to the low ratings on AS. Sure enough, Bandai came out and said Geass was their highest seller. The people out there who are saying they are waiting for a One Piece sale before they buy should follow Ishtar's example and buy the DVD's.
Worst case scenario: The DVD's are discontinued and you're left with a "woulda/coulda/shoulda" sense of disappointment for not going through with it.
Best case scenario: People in a state of panic buy the show making One Piece one of Funi's top sellers and Toei/Funimation continue business as usual ... or better.
Now I'm not saying you should buy every One Piece set (though I doubt Funimation wouldn't mind if you did) but it's a better idea to let your wallet speak over a keyboard and mouse.