Spock - 'Captain, the creature's ability to throw itself out of time sync, makes it possible for it to be elsewhere, in the instant the phaser hits. There is therefore no basis for your self-recrimination, if you had fired on time (and on target) 11 years ago it would have made no more difference than it did an hour ago. Captain Garrovick would still be dead. The fault is not yours Jim, in fact there was no fault.'
Factually correct, the 11 years are explained perfectly by Spock 3/4 of the way in.
15 November 2018
Warning: Spoilers