i am not an insider, but i have a few buddies who work in the right jobs to know this kind of information. i heard just last weekend that the write off decision was planned all along, but technically solving the 3rol issue was holding it up. then they wrote off the cost to repair every remaining console in service.
it might actually be shady accounting. then again, it might be smart accounting. yours, mine and everyone else's console that is currently in operation is assumed to be subject to this write off. well, not mine actually since it is no longer under warranty.

the working numbers were actually simple too. $100 per console for the over 10 million consoles that are estimated to be in operation; including already repaired/refurbished consoles and not including approx 1.5 million consoles which are assumed to be not working or affected by a non-warranty issue.
if you have billions of dollars in cash and expect to report your first profit for a division within the next fiscal year, it does make a bit of sense to do it this way...