Rd2??! Rb7 is more like it, that would have stopped it all
"I think he was a little shocked when he realized all he had was two useless interjection"
I don't think that was it, he obviously didn't see the mate comming or he could have just slid his rook over. Then what? 10.Rb7 wins, if you go for the check, he blocks with the rook, if you capture he recaptures with the bishop, and it's all downhill with the exchange from there, you will never be able to stop his passed pawn
Or if he wanted to go a passive route he could have just moved his h pawn up one, giving him an escpae square. He obviously didn't even see the "mate in one".
Any other moves I/he could've done?
edit: I looked at the "Before You Post" forum after I made this one up, so please forgive me for posting a win. I'm not trying to brag, it was just a fun game i wanted feedback on. Thanks.