Albeit it a very small glimpse into anything, I thought it was worth at least speculating.
I didn't really see a new move animation wise. However, I am wonder if our stun move also locks the mob in place or something? Because he hit it with a jarring strike like attack had time to run to the back and buff and hit it again without it following him. The tun icon on the gob wore off so I don't think it was that but I can't say it wasn't that adamantly. Dunno, something was there but I can't tell what it was.
If you haven't seen the video yet click here