For those guild members that were thinking of taking this bounty on. I believe the two marks are still guild members and have not been excommunicated. Live by the Creed!
The Third Tenet
No Hunter Shall Slay Another Hunter
Targets and bounties are Acquisitions and Merchandise. If these are provided as the Creed's values, then it should be held that Bounty Hunters are Professionals. You try not to kill an acquisition and to deliver them to the Client. You must not kill another hunter.
Hunting is a competitive business, but we must remain professionals. Inter-Guild warfare is not permitted.
However, any Guild Hunter who has been excommunicated is open season.