Selling strangles and straddles

Nice, for a straddle one of the legs would most likely be in the money at expiration. How would you shut it down from there?

 

I don't let my options went ITM. I take a stop loss equal given premiums for sold options +10% of this amount

 

and you're short some 900 ES calls?
These games only good till the first big "oops"