If you read or see any of the post game interviews with the jury members (chat transcripts, morning shows, etc.), Deena and Alex have both pointed out that they felt Rob played an excellent game. I think that Alex would vote for one of the broomsticks (Heidi/Jenna) over Rob, but his respect for Rob's play may get his vote over anyone else. Deena's interviews have revealed that she fully respected what Rob had to do (and her attitude that it was her mistakes and Rob's great game play that led to her boot have certainly nominated her as my favorite non-winner of all time). In my mind, Dave is the only current jury member who is up in the air and he has shown respect for the game.
So if we look ahead for Rob, he has several storms yet to weather. The most likely scenario is that Heidi and Jenna are on the jury and vote against him while Alex and Deena are in his corner. Dave may be on the fence depending upon who is seated next to Rob.
Rob's talent so far has been his ability to run the game behind the scenes, not run it from out front. The ire of the girls this week puts Rob smack in the middle of the tribe, not where he wants to be. His best bet is to weather this storm and let Matt take over the pole position, allowing Rob to slip back out of the limelight.
Don't forget also that the other members of the tribe need to begin considering the end game. It's not enough to make it to the final two, you need to have someone sitting next to you that you feel has the jury's wrath. Heidi and Jenna have the sexual appeal/crush material to be too much of a risk. If I'm Matt or Christy or Butch, the most likely polarizing figure left is Rob.
That being said, I think Rob's game play MAY swing votes his way. Maybe not 4 votes, but I'll bet it would be close! That may depend upon Rob's ability to suck up come question and answer time...