Sadly they will be focused on helping Seb get the record number of wins in a season. The fact that they have more races every year these days somewhat make it an easier target though. If there was a scenario where he was leading and Webber was second, and he let him through he Seb would win over a lot of fans. Not going to happen though.
Any chance Vettel will let Webber by in these last few races? As long as Vettel didn't make it too obvious maybe had the team's help to make it look like Mark won on strategy, I agree that it would do a lot for Vettel's likeability.
I don't think it will happen though. Vettel wants it all. He wants all the records even though these late season victories are hollow after he's clinched and the other teams have abandoned the year to develop for next year. I also think Vettel has no respect for and does not like Webber. Crushing Webber could be payback for Brazil 2012.