Or perhaps be unable to do anything, (rendered unconscious or even deceased*) including 'going bananas.' Let's be fair please, fellow Members. She was trashing him and his Unit with the rocks, and he stepped in to stop that. Having done that, she has a go at him with that metal object. He steps in and removes her to the balcony. Shuts the door. Invitee acting unlawfully on several counts neutralised, situation de-escalated and then W acts, so says Defence totally out of the blue, irrationally, and tries to climb off that balcony.
*Now there's a good point to moot. Let's assume she did hit him with it, and the blow killed him. She gathers her belongings and leaves. The Police find the phone and hear the recording. Whom do you reckon would be charged, and with what?
Neutralise:
Verb 1. neutralise - get rid of (someone who may be a threat) by killing; "The mafia liquidated the informer"; "the double agent was neutralized"
do in, knock off, liquidate, neutralize, waste
kill - cause to die; put to death, usually intentionally or knowingly; "This man killed several people when he tried to rob a bank"; "The farmer killed a pig for the holidays"
2. neutralise - make incapable of military action
neutralize
demilitarise, demilitarize - do away with the military organization and potential of
3. neutralise - make ineffective by counterbalancing the effect of; "Her optimism neutralizes his gloom"; "This action will negate the effect of my efforts"
neutralize, nullify, negate
weaken - lessen the strength of; "The fever weakened his body"
4. neutralise - make chemically neutral; "She neutralized the solution"
neutralize
alter, change, modify - cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"
Which definition are you using here may I ask?