My check airman did the same thing. He didn't arm app. so flew threw the glide slope. I told him to disconnect everything go to idle power, dirty up and descend back to the now out of sight glide slope and about 1500 ft we broke out approaching glide slope and landed. He wanted to fly the leg but it was late at night and I just wanted to have a couple beers and go to bed and didn't want to go around for no reason except stupidity.