So today I was messing around Onzozo as a 71 BST and I noticed LoO was up so I figured I'd give it a shot. A few min after I started fighting it a 75 drg, Ramorakomo showed up and kept following me around as I killed it. I was doing well with no miss-charms until it was at < 10%, so of course I miss-charm, and he immediately claims it and kills it.
Since there's nothing I can actually do about it, I figured I'd vent my anger here a bit.