After Spock beamed over the torpedos to Vengeance, should he have
contacted Khan to let him know his crew was not dead, that Spock still had them aboard the Enterprise? With his vessel defeated and powerless, and his crew alive aboard the Enterprise, Khan may not have attempted his crash into San Franscisco, with looked to me like a crazed attempt to avenge his crew, which he thought Spock had killed. Could Spock have saved a lot of lives in the city by making follow-up contact? Yeah, you could argue Spock was trying hard enough to keep the Enterprise from crashing herself, but a one sentence follow-up call might have helped?