Ralph has been criminally underused this season, so I love that he was the one to figure out Thawne's plan. It's just a shame that the usual thick-headedness of Team Flash has made Ralph's revelation pointless since they failed, YET AGAIN, to stop and listen in time.
Honestly, at this point Flash seasons could be wrapped up in about 10 episodes if it wasn't for the writers making everyone stupid just to drag things out.