Apart from sounding like a death metal band, this power says:
If the psychic check is passed then all non-vehicle models in the target unit may roll a D6. On a roll of 5+ that model regains a single lost wound.
If I understand wound allocation correctly, then I can't think of a ready example where more than one model in a unit has lost a wound, but the rules don't seem to prevent me from rolling 10 D6 to heal my one Veteran which has lost a wound as it doesn't specify that only wounded