I for one, am still annoyed with this, I was in Finale and can tell you what happened exactly
On IRC I just looked at #bushtarion and Twigley had just said: All the alliances are losing members, C.U.N.T just lost a few and 5 are gone from Finale, I looked at alliance page and sure enough, we had lost 5 members, I asked on IRC and Bruce said 'We decided to merge the 5 most *useful* players with Silence's alliance'. This is when people started getting annoyed, I was banned from the chat room
The stupid thing was we were left with no knowledge of what had happened then we find that the leader has abandoned us with 4 more players. We're left there knowing we'll get raped soon and so Wacky and I made reQUITal, which I have now left over a permissions row.
The point is Wacky and I were both putting in over 8 hours every day and along with Jamie were the only ones that actually defended at the start of the round. At the very start we only had 8 members on first tick which wasn't too good. The most annoying thing though was that Bruce was offline and was much less active than a lot of people in the alliance through to the time of the switch.
Iamsmart I agree with your logic of 40 is definately more than 20.