So ordering somebody to do something that fixes the result of a race is not race fixing?
Not in the same way. They had the top two positions and wanted to avoid the potential for damaging the car / limit the chances of a crash. They didn't ask them to switch position, they basically made the decision to finish the race in the way of lowest risk. Red bull took the view that both cars were very competitive and a battle would lead to a crash so told both drivers to spin down their engines a bit and take the points.
Vettel has fallen somewhat in my estimations after all this. Senna was very much the same but at least he would defend what he did and admitted to it. Vettel has just taken the pee. Perhaps that's part of what is bothering Webber. It was painful to watch his apology and how insincere it was.