I think they did in that case. I seem to remember them saying "mind the gap. This is a team order".
Could be wrong.
Actually, I was pointing out that they used it at the 2011 British Grand Prix and if they wanted to use team orders at the 2011 Brazilian Grand Prix, they would've. Sorry for not making it clearer.
"Mark, maintain the gap."
"Mark, you need to maintain the gap."
Anyway, why would they "fake" a gearbox issue already at lap 5?
It's also nothing new that Webber suffer in the first stint, but this time he actually had a good shot at winning the race, even without Vettel's gearbox problem.