I voted Senna, Villeneuve, Mansell, Alonso and Webber. Webber clearly showed during Silverstone 2011 that he has no problems ignoring team orders, even if that was quite a different situation. He already feels like a #2 at RBR anyways, so he just seems to be only looking out for number one (himself, in this case).
I think Prost and Schumacher wouldn't ignore team-orders. They might throw a fit internally afterwards, but they've both always been (well, except for when Senna was around at McLaren) teamplayers. Certainly this early in the season they would've had faith in their own abilities to make up for the 'lost' points later in the season.
Hamilton would probably tweet about how mad he was about it and show his unhappiness over the radio, but wouldn't go against his team. Button, KR and NR aren't the type to go against their teambosses either. They'd stew, sure, but resign to it.
As for the Senna quote, "if you no longer go for a gap that exists you are no longer a racing driver because we are competing, we are competing to win", it's a nice one, but I always take it with a pinch of salt seeing as he used it to justify purposely running Prost off track.
EDIT: not a fan of team orders by the way, but being pragmatic they are part of the sport an unavoidable.
Edited by SonJR, 24 March 2013 - 14:45.