Help yourself to this novelty

I recently completed the following CC game, in which my opponent hit me with quite a strong novelty. Up until move 10 we had been following some previous games (not that many actually), an I assumed that after 10 ... Nb4 he would have to deal with threat of Nc2+, when I would recapture in d5. Instead he calmly played 11.dxc6 and after 11. ... Nc2+ 12.Kf1 Nxa1 13.Nd4! revealed the point behind the sacrifice. I decided to castle, but White has an advantage no matter what Black does. Unfortunately for my opponent he overstepped the time limit (7 days per move) soon after, and I flagged him. But if you play the English Opening, feel free to use this novelty if the opportunity arises (not that it is mine to give away).

1.c4 Nf6 2.g3 e5 3.Nc3 c6 4.d4 exd4 5.Qxd4 Na6 6.Bg2 Bc5 7.Qe5+ Qe7 8.Qxe7+ Bxe7 9.Nf3 d5 10.cxd5 Nb4 (D) 
11.dxc6 Nc2+ 12.Kf1 Nxa1 13.Nd4 0-0 14.cxb7 Bxb7 15.Bxb7 Rab8 0-1(T)