I like your analysis, however, there is some contradiction in the events you stated.
- Both McL drivers were in fuel saving mode and only Webber from RB.
- This a problem since Webber/Vettel/Hamilton/Button were all close but only Webber/Hamilton/Button were told to conserve fuel. What about Vettel? How come he didn't need to save fuel if Button needed to do so yet he was behind Vettel?
- Also, nothing says that Button had to obey the order. It is up to the driver to decide what to do in such a situation. Kind of like when they are told to watch for their tires. It's the driver's choice to do what he thinks is best at the end. It's risky but if he's willing to take that risk that's his decision.
In my opinion, there were some team orders. Hamilton should not have been told that "both" drivers are in fuel saving mode. What is the need to tell Hamilton about that. Why didn't RB tell Vettel about Webber's fuel situation? I think Button was frustrated at the team and that's why he pulled that move on Hamilton. But unfortunately he had to give it up.
But what do I know, I talk nonsense 
Why were only Webber, Button and Lewis on fuel save? Good question, you'll have to ask Horner, maybe a botched attempt to get Vettel past, it would account for the blame being laid at Webbers door
The reason to tell both mclaren drivers to save fuel is becuse it was probably a coded message to save tyres, fuel and brakes and not race to the end, otherwise both might not get to the end. No Button doesnt have to obey it , but its a foolish line to take. Either he got the meassge but still had a pop at Lewis or he didnt get it for some reason. Either way when Lewis saw him racin he raced back. Then they both had to fuel save.
In response to both of those quotes...
@ FactMan
- The reason webber had to conserve fuel is because he was pushing ALOT harder than Vettel due to Hamilton chasing his bottom for ages at speeds/lap times what were NOT expected, Just look at Mercedes and the other cars behind they got left behind.. did they even see any action after the first lap?? No.
- Basically, Vettel wasn't having to push quite as much thus making him not need to safe fuel.
- Regarding the button overtake anr obaying orders, team orders are an accepted pratice in F1 and a driver should know that if in fuel saving mode it means bring the cars home (we need the points) don't do anything stupid.
- The reason they told Hamilton that both of them were having to save fuel is to try and prevent them from squabbling over places. If you see a crash what took a driver out the race and lost another driver vital points... doesn't it seem pretty damn foolish to copy them?
- Also, did you notice that Button had to drop back alot more after the move than before they were asked to save fuel. Buttons car had to be put into fuel saving after the move to a higher degree than Hamilton.
- It was a very silly move, I do understand that the are racing.. but it was a team order and someone with common sense would of known or understood what the message ment..
@ racechick
- Hamilton and Button were fueled on what they understood and worked out they would use, but due to the pace of the top 4 cars at the start they ate alot more fuel, however Vettel had just enough fuel to get him to the end of race pace, but Webber had to push alot more because of Hamilton.
- Also, The McLarens both had to push super hard to keep with the RedBulls...we all know the RB is the fastest and best car on the track (disregarding reliablity) so.. yeah.
- I like your understanding on Buttons move, indeed he might not of bot the message for some reason but to me it seemed to me and still does that the move was a jealous one