Soloing Morgeth

So there's this new glitch that can launch your enemies flying by using your finisher: bit.ly/2XYS0mE.
Tried it out on the thrid raid encounter of Last Wish; Morgeth, The Spirekeeper and managed to defeat him first try.
Apologies for the backround noise, my friend post is currently top on r/destinythegame and he's responding to everyones messages.