time
There was probably lag or a disconnection in reporting when he made a move. His timer that you saw continued counting down because of a lack of anything telling it to do otherwise. When all sides communicated again, his timer was corrected to reflect what actually happened.
Alternate answer: This place is swarming with hackers, the site hates you, and there's definitely never an innocent explanation for anything.
They hacked your computer and now have your bank account number and credit card information, contact local authorities asap.
If there's something strange, with the player's time, who ya gonna call?
GHOSTBUSTERS!
If there's something weird, and you think it's a crime, who ya gonna call?
GHOSTBUSTERS!
NAAAAAAAA na NAAAAAAAA na NAAAAAAAA na NAAAAAAAA na NA na nanana
NAAAAAAAA na NAAAAAAAA na NAAAAAAAA na NAAAAAAAA na NA na nanana
I ain't afraid of no hack!
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