There's a 7th level save-or-die psionic power called decerebrate that, in short, removes a part of the victim's brain stem, turning the victim into a limpy vegetable, and, if the victim's not cured in 1d4 days, the victim perishes.
Some effects can cure this condition (namely, the spell greater restoration or another similar 7th-level or higher curative effect), but I can't find a good psionic way to do so. There's the costly way of using bend reality or reality revision (i.e. psionic limited wish or wish, respectively) or decapitating the victim then manifesting restore extremity followed by psionic revivify, but is there a cheaper or less extreme psionic way to help a buddy who's been the victim of the power decerebrate?