Pronominal form for the third (as 'he/she') persons in singular of the present of the subjunctive mode, and second (as 'you') and third (as 'he/she') persons in singular of the imperative for the verb to escape. See verbs/fugue .
It corresponds to the second person of the Imperative of the leaking verb. It would be wise to write that word between exclamations to emphasize the mandate to which it refers.