I think the story is that the last ship has the ability to access any of the rifts that are already in place, and by eliminating his rifts, you trap him in our universe where we can finally kill him.
Fleet Admiral Duane Gundrum, U.S.S. Merrimack
Fleet Admiral Ventaxa Proxmire, U.S.S. Shaka Walls Fell
Blog: http://www.sarbonn.com/?page_id=1990
Foundry series: Bob From Accounting & For the Sake of the Empire
I've actually witnessed this a few times, he can open up a rift where he is at and escape to one of the other open rifts while in combat - once you have shut all the other rifts down he has no-where to escape too.
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Fleet Admiral Ventaxa Proxmire, U.S.S. Shaka Walls Fell
Blog: http://www.sarbonn.com/?page_id=1990
Foundry series: Bob From Accounting & For the Sake of the Empire
Awoken Dead
Now shaddup about the queues, it's a BUG
Me playing UT2k4 (red guy) - http://www.youtube.com/watch?v=Wz0DnP7wXnU