UPDATE 2 -- 12 Noon PDT, February 2: Ubisoft has now issued a new statement on the matter.

"After further investigation into the matter of keys that were fraudulently purchased on EA's Origin store, we are reinstating keys for consumers who already had successfully activated and started playing the games. Any remaining fraudulently obtained and resold keys have been deactivated.

"We are working with EA to prevent situations like this from happening again, and we will continue to deactivate keys that are found to be fraudulently obtained and resold. We strongly recommend that players purchase keys and downloadable games only from the Uplay shop or trusted retailers."

UPDATE 3PM PST: Ubisoft issued the following statement regarding the grey market games getting blocked:

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