<div>R' Danny Schoemann asks what the source for the Psak of the Chazon Ish and Rav Shach is, and adds:</div>
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<div>"There's the sugya of "Ein Adam Oseh Din L'Atzmo" discussing<br>saving/retrieving personal damage. All the cases there seem to refer<br>to monetary personal loss. Not potential spiritual harm. Not sure how
<br>we pasken."</div>
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<div>I do not think this is accurate. The Sugya there (BK 28a) brings that a master may be Chovel in his servant who refuses to leave the Shifcha K'naanis he is married to, and the standard understanding of this Sugya (see Minchas Chinuch (Mitzvah 8), Bircas Avraham (Erlanger) ad loc, et al) is that this means that one may punch his fellow to be Mafrish MeIssur if there is no other way to get him to stop, and need not go to Beis Din.
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<div>It is true that this is not a blanket Heter to do whatever you want, and if there are less drastic ways to stop the Isur one must employ them first, but, ultimately, the Hetter is there. </div>
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