Who said we were clustered together? ..... I'm sure you got that from the mobs flushing us all out, but I assure you, if the guy drags the mobs, systematically over each of your team mates, then scoots out of the area, they give up chase on him and then come back in the order they saw you and start attacking... One . by . one . And the thing is, that's what they wanted.. They wanted us to jump out, because they were petrified (as it seemed) to come down the hill after us. So they needed to see exactly where we were so as soon as the mobs came in, one of our guys starts shooting, and rolls out of the way of the mob, and snap... He's dead... then the mobs run over to the 2nd guy... roll, snap. Then me, roll snap... At this point, our wild card sees what's going on, and falls back a ways, with mobs in chase... We roll over the mobs with a quick re-group, and drive the other 8 guys back out of B and up the hill again, take new positions to have the same d0uchebag come back in with another group of mobs, systematically (while in new positions) running across each one of us, and scooting out.
There is not much adapting you can do in this scenario, when the other group on your team is so poor, that they can obviously loose to the respawns from the random kills we make from guys getting cocky and running down the hill. And we were obviously the targets they wanted and why they tried so hard to take us out when A was obviously so much easier, is a complex theory. So, our choice was rather limited in what we "could" do with 4 vs 8 -- excuse me, 4 vs 8+1blue. Yeah, I'm sure the other team would have just loved for us to pop out and start dancing around. In fact that's what their entire intentions was when they had the blue go and grab the mobs. So tell me how moving around was anything but counter-productive.
The point is, they couldn't navigate anything. They were in complete lockdown around us, and had to use a blue player to subvert it.

