Back assward boss

Nothing irritates me more than bosses who don't know crap. Maybe that's not the right phrasing. Nothing irritates me more than when intelligent people make a stupid call and won't back you up. Our department was told by our boss how he wanted stuff done. We've been doing it his way with no complaints on our end. Now, we knew the whole time this was gonna bite us in the ass at some point. Today was the day. We were called out and instead of our boss saying he told us to do it "way A" he threw us under the bus. I hate people.