In qestoins about subject (here) default answer is 'saving a personality does not save rest of his unit'. Question - why ?
SE Rulebook : A Personality and all his or her attached cards make up a unit. If a Personality leaves play (for example, by being destroyed), all cards in the unit leave play in the same way. When a unit is targeted, this targets its Personality, not any other cards in the unit.
Ruthless Advance : Destroy target defending unit. The Seventh Tower : Destroy a target unit opposing him with less total Force than your Personalities Force. Consumed by Five Fires : Destroy a target unit in the enemy army with fewer cards than this unit.
IIRC, clausule 'target unit = target each card in unit' was active somewhere in previous editions, but I cannot remember any current applications / variations of it...
[EDIT : card texts]