Hokushin wanted a
Gharn's Rock. Watch Sirken's recent stream where he interviews Hokushin, he mentions it specifically and even notes that not a single Gharn's has dropped since Velious has been released. In all their Vulak kills not one Gharn's dropped.
In the past month or so Forsaken/Asgard has gotten Vulak more often than Rampage, but still no Gharn's...until yesterday. F/A killed Vulak, got the server's first Gharn's. It obviously didn't go to Hokushin. A couple hours later he decides he's quitting and to wake the Sleeper.
This is not a coincidence.