This was clearly going nowhere, not that he had any idea how to fix it; as it was they were clearly bound to just go around and around in circles until somebody finally dropped it. But LaRusso's tongue darted out and Johnny was powerless not to look, and that was clearly dumb. It certainly wasn't about to help anything here, so instead he only picked at his glass and took another large gulp.
"Yeah, too late for that, sorry."
Which was probably more honesty than the guy was looking for, but it slipped out, and it was too late to take back now.