Not sure what the correct ruling should be in that situation, but I can understand the girls at least bringing it up. I mean, they are playing for a LOT of money here. Not defending Lori in any way. I don't like her at all and would like her to have already been booted off the show a long time ago. But I don't think what they had there could actually be called a teeing ground, or be treated as such in regards to the rules. Had it been a teeing ground, they would have been allowed to use a tee. The intent of the challenge was obviously to re-create an approach shot situation, and I'm sure that's what the official was thinking of when he made his ruling. That said, I think consideration should have been taken to the fact that it wasn't simply an approach shot situation, and that Christina was having to deal with divots left by other players. I have noticed those kinds of things before in past episodes of the show and have always looked at it as a major flaw in the show. Perhaps they should look into that and develop some "local" rules for those types of situations when they happen on the show.
As for what Lori did to Sophie, that was just dirty pool as one of the hosts stated. She knew that at the very least she was going to upset Sophie's thought process, and at best she would get the same thing done to Sophie that she had just done to Christina. Let your game do the talking, Lori, and not your big mouth.