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.
Castle Gate Castle • Singular Bow this card: Produce 2 Gold, or 3 Gold when paying for a Unique Samurai. Battle: If you are the Defender, and you are a Crab Clan player or have only one province, bow this card: Straighten one of your target Personalities. Move him to the current battlefield.
Can I use the battle action to straighten a personality at the current battle if I am defending and a Crab player?
Castle Gate Castle • Singular Bow this card: Produce 2 Gold, or 3 Gold when paying for a Unique Samurai. Battle: If you are the Defender, and you are a Crab Clan player or have only one province, bow this card: Straighten one of your target Personalities. Move him to the current battlefield.
Can I use the battle action to straighten a personality at the current battle if I am defending and a Crab player?
Yes. Even if the movement to the current battle is negated, the target personality will straighten.