Actually, I think I may still have you no matter what you do. Gs*27 mate. If you see a move to save yourself other than that last, let me know, but I'm not sure there is anything.
But I'm feeling kind of bad, like I talked you into making a sacrifice that cost you the game earlier on. If you want to go back further, you can (I don't have the position saved and would have to play the game back to that point). But if you have the position saved or are willing to go back to an earlier point, I'm okay with that.