And people wonder why there is an anti-hacker/unlocker sentiment in many posts...
Just for the record, I'm not saying that it's alright to fry your iphone in order to get it fixed. At the same time, my experience is that Apple has often denied problems that are very widespread in order to avoid dealing with masses of warranty repairs (Macbook pro display graininess/unevenness, heat issues, warped display bezels, imac capacitors, to name just a few). That is very unfair to high-paying customers and Apple seems to have a policy of trying to ride out issues until the next generation. Not always, but too often.
In any case, my point is that what goes around comes around...
Oh, and let's not pass moral judgement on unlockes/hackers. I don't think that they're anymore inclined to suggest these kinds of tactics than anybody else. In this case, maybe yes, but not as a rule.