Yeah, Blizzard really screwed this one up. It was highlighted on the beta forums again and again but got ignored, it went live and the entire world noticed it was a problem immediately. If the nerf had happened in beta it wouldn't have been as bad, as it is Blizzard have under 3 weeks to rebalance retri paladins before the expansion and it's not long enough so they have to make huge swinging changes like this which is going to annoy an awful lot of people.
Yes retri palas are overpowered in quite a ridiculous way at the moment but nobody enjoys a smack with the nerf bat.