
As the devs explained it, he went back 10 years through the echo to the events just before the Silvertear incident. The party he fought the Morbol with actually existed at this time, and by way of echo logic; they had killed the Morbol and watched the Silvertear battle completely without the Hyur in reality. After coming out of the echo, he decided that he would seek out that party, which he successfully did, except for the female Elezen.