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.
Fall Back: Battle: Move your target Personality home. If he moved, straighten his unit, and you may straighten one of your other units.
Can the italicized text straighten a unit at:
1) The current battlefield?
2) Your home?
3) A different battlefield?
Mouth
Fall Back: Battle: Move your target Personality home. If he moved, straighten his unit, and you may straighten one of your other units.
Can the italicized text straighten a unit at:
1) The current battlefield?
2) Your home?
3) A different battlefield?
Mouth
Yes to all three.
Notice, the straightening effect doesn't target, so it can't run afoul of the Rule of Location.