There's no question that Ferrari screwed up on Sunday, they screwed up royally. Alonso was brought into the pits the lap after Mark Webber because, presumably, a decision was made that Webber was the bigger threat championship-wise than Vettel.
Ultimately it was that decision, coupled with Alonso's poor start, that cost them the 2010 drivers world championship. So does someone need to get the boot? The Italian Minister, Roberto Calderolli thinks so, but he's from Italy's far right party so we'll ignore him, and anyway he was fairly decisively dealt with by Luca di Montezemolo.
Stefano Domenicali, boss of the race team has made his way up the ranks and deserved a chance to lead the team, but have they been quite the same since Jean Todt left? No, they haven't, but then they lost Rory Byrne, Ross Brawn and Todt himself in quick succession - any team would suffer deeply from that, but I do think Ferrari are missing that certain something.
I sincerely doubt that Ross Brawn would have made what was essentially a knee-jerk call in bringing Alonso in to cover off Webber - for starters Ross would've factored in that he would have to pass Petrov and Rosberg, neither of whom are pushovers, once he came in for his stop and dropped down the field.
I don't think Domenicali is in danger of being sacked but Ferrari ought to look long and hard at recruiting a tactical mastermind in the mould of a Ross Brawn, or a Pat Symonds even. Everyone is playing catch up to whichever car Adrian Newey designs and one area Ferrari can make up ground is tactically. With Ferrari, Mclaren and Red Bull all in the title fight right to the end, none of them will likely have a significant advantage at the start of next season (though Renault or Mercedes could be a danger), so we could be in for another tight season - and every second gained through tactics will count enormously.