A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
A player, 2 October 2010
I used the search function, and I found a few questions regarding Turn the Tide, but nothing that specifically answered this question. If this has already been asked, I apologize.
Situation: I have several personalities at the battle, at least one of whom is a Commander. My opponent plays Turn the Tide with only one personality on his side. If I react with hold, how many of my personalities will be unbowed after Turn the Tide finishes resolving?
Turn the Tide Battle: If your army has one or more unbowed Samurai and the enemy army has more unbowed Personalities than yours: The enemy leader targets and bows a different unbowed Personality in his army, one by one, until his army no longer has more unbowed Personalities than yours, or until he can no longer do so.
Hold! Reaction: Before another player's action's resolution, target your unbowed Commander at the current battlefield: Choose one of your Personalities there. Choose whether to negate his bowing or his movement from that action.
Zen Faulkes (rules official), 2 October 2010
I have several personalities at the battle, at least one of whom is a Commander. My opponent plays Turn the Tide with only one personality on his side. If I react with hold, how many of my personalities will be unbowed after Turn the Tide finishes resolving?
One.
Hold! will negate the bowing of your selected Personality from Turn the Tide, but that doesn't end the effect of Turn the Tide. The effect of Turn the Tide will continue "until his army no longer has more unbowed Personalities than yours, or until he can no longer do so." The latter condition shouldn't kick in under the conditions you described, so you have to target and bow until your army does not have more unbowed Personalities than the one who played Turn the Tide.