Bert, from VG Sports posted this email from an EA representative:
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Guys,
I appreciate all the reports of this serious exploit. We, through your help, have identified a game play issue regarding formation switches on offense that could affect the fatigue level of the defense. This issue would affect both online and offline play.
This issue can be resolved in one of two ways. The first is to turn fatigue off; when this option is off, the issue can not be observed or exploited. The second is to audible to your original play (audible L2) if the offense shifts; while this works, it makes it very difficult to make pre-play adjustments, as the audible resets any adjustments.
For online play, we will be patching the servers and disabling fatigue, so that this issue will not be used as an exploit online. This change will be made tomorrow morning at 1 AM PST for both the Xbox and PS2 servers. The update will be invisible to users and will not require a client side patch. Online games will still show fatigue as "on" but it will really be off. While this isn't a perfect solution, we felt it was the best way to counter the exploit.
We have also modified the settings at the Madden Challenge events and alerted the staff to this so that this issue can not be used as an exploit in the events.
We wanted to make you aware of this so you could inform your members for their normal offline games, and wanted to take this chance to thank you for helping identify this issue and bringing it to light, the power of the community really helps make Madden the great game that it is.
Be sure to send me any questions.
Thanks,
Nathan Fahrenthold
EA SPORTS Community Producer