I agree with you Kismet---they should have had the girls working out from the beginning. I've read that most of the "top" models have personal trainers so that they can have the thin but toned look and it seemed strange to me that they didn't get a trainer for them as they did in the last season.
Also, I have trouble seeing Shandi doing Sports Illustrated or Victoria's Secret although she's obviously perfect for runway and Vogue. I have read/heard that drug use is rampant in the fashion world and I agree, Kismet, that it might be too easy for Shandi to fall back into drugs if it's surrounding her and she doesn't have a strong support network to fall back on.
But, anyways, this is about who gets bumped next episode and I still think, if Shandi doesn't quit then it'll be Mercedes, unfortunately!