The problem I have with Bristol's mom "supporting" her is that it is, in essence, a campaign for mom. It's not just Bristol who benefits if she does well on the show. Mom gets some publicity as well. But if Bristol continues to be crap on stick on the floor but doing well in the vote... well, it might not be the publicity mom was looking for.
And those teams are RIDICULOUS. Brandy and Jenn needed to be on two different teams, obviously.