I thought the troll subjugator title thing got disproven, and that the current theory was that it was active during weaponskills.
There is no proven theory of how to activate the latent at this time. Regarding the title theory, that was listed on some JP site, but later found inconclusive.
No one has yet to have evidence of what triggers the latent. If you do, post the link & any supporting evidence. Until then, it's all heresay.
PL (40) CRP (32) CON (27) ALC (17) THM (15) GSM (15)
PLD  RDM  WAR  BRD  NIN  SAM