Moonkin stuck in the snow

In August I heard rumors about a moonkin stuck in the snow in the scenario Blood in the Snow, so I thought “What’s that about, how come I haven’t seen it before” because I had completed that scenario so many times. So I entered and went looking. I finally found him. No wonder I haven’t seen him before because you won’t run into him unless you jump down from the cliff.

He’s stuck in the snow with his head first, legs constantly kicking the air, and if you go close enough he’ll try to hit you. Poor guy, wonder how he get stuck and who he is.