Probably messed up.

1d7749c65c90c32f5e2c036217a2574f3f4403da39174626b246eefa620b58d9

link for the lazy: https://www.blocktrail.com/BTC/tx/1d7749c65c90c32f5e2c036217a2574f3f4403da39174626b246eefa620b58d9

Its indeed rare and usually - at least from what I read - by accident. Some reported they got high fees back from the miners.

Thanks. I think it's caused by accident. I heard about that someone has got his fees back from asicminer's pool.