I'm not sure why this is on my mind now, but I wrote a piece back in 1994 about the history of Boston ultimate. The short story is that two equal teams in an area will not exist. There will be a top team, a second team will form and may stay together for awhile but eventually its top players will join up with the top team. The second team then has a few lean years before it all starts over again.
From 1992-1995, the 2nd team fell upon hard times, not making Nationals with the 3rd spot. 1996 saw the emergence of Snapple, which morphed into Dark Horse and RoQ the next couple years (but they'll always be Snapple to me). In those years, DoG had relatively few additions to the roster, most of them being players who had moved from other cities (Cameros, Greff) or unretirements (Seeger, Axon). Zaz was one of the few who worked his way up the ladder, having played with Boston Kremes before.
DoG absorbed the top players (and Lyn) from Snapple in 1999 after a triumphant Worlds championship that summer, leaving a skeleton crew to form into Blackjack, which missed Nationals that fall before making it the following year. BJ missed again in 2001, causing another reforming into Boss Hogg. BH lasted until its top players and DoG simultaneously decided they had had enough and formed a new team (called DoG) in 2004. Twisted Metal formed, not out of the remnants, but out of something completely different. The BH guys who didn't play on DoG mostly played Coed that year. Had BH not dissolved, probably some of the TM guys would have played with them and maybe one or two would have made DoG, but the absence of a clear 2nd team paved the way for their existence.
1999 signalled a change to a youth movement which has never stopped. While such dinosaurs as Al and myself have stayed around, we slowly lost the rest of the old guard. Nepotist Wicks brought in a bunch of Brown players and recent alumni. The team might still be old compared to other teams (Jam's oldest is 32, Sockeye's 33) but has continued to get younger.
(By the way, I should note that other than some split squad losses to Twisted at WMO this year and a scrimmage loss or two to Snapple/Hogg, the 2nd team hasn't beaten the 1st team since 1991. We've lost to a whole bunch of teams, but not Boston B.)
Is there really animosity towards DoG from TM? If so, then I wouldn't have exhorted Jeff Graham to cut in a pivotal point against Condors when he was just standing around. I don't really talk to those guys, though, so who knows whether to believe a couple rumor-mongers who have already stated that they deliberately exaggerate to get hits.
Anyway, I've always felt that DoG has respected the sovereignty of the 2nd Boston team, even during the years with massive defections.