I've never seen it before, it looks dangerous, is it a known line?

Well...it looks like you handled it quite well... although I am curious if you could get away with holding the bishop after f6.  (I think so).  But trading off that bad bishop for two pawns actually was adequate compensation in that position.  I don't know if it is book, but...it seems that it doesn't matter.  Black has too many chances for counterplay.

Chessbase says no, giving this line.