I've run into this a few times when the team battle kicks off with either an odd number of players, or over half the room choosing A or B. It never ends too well for the lesser team (and I'm usually on it).
No matter what you do, there will be an opponent or two that have nobody after them that are free to double up on your tail. I can manuever around all right, but as soon as I get to lining up for a shot my actions obviously become predictable (even worse when my target is in contact with my newly acquired tail!) and I get hammered.
I've tried running, double back in a hit and run fashion with some success.
I've tried just winging one of them but not shooting them all the way down so they fly around somewhat crippled, which actually buys you some time at any rate
Is there any good way to go on the offense when outnumbered? I was in a two on three this morning, my team mate was having an awful time of it (they dispatched him really quick each time) so it was 3 vs me a good portion of the match and it was ugly.