December 26th? That's two days after the Hashcows theft.

Why the hell would he start mining to the same address two days after stealing 40BTC from another coin-switching pool? This bloke's incredibly arrogant, or incredibly stupid, or both. Or is he trying to somehow dilute or launder his ill-gotten goods?

https://blockchain.info/address/13R87ropkDKzDEuVeQoX64kkcLvPWVdTKH
He's starting to spend the funds.