Chasam Sofer says what I think is a chiddush l’halacha. Chazal tell us that there are two aveiros which, if violated, are tantamount to rejecting the entire Torah: 1) avodah zarah; 2) shabbos. In parshas Shlach the Torah spoke about avodah zarah; here, the Torah speaks about shabbos. If a person sits in a hammock all day Saturday does not do any melacha, that’s not Shabbos, says the Chasam Sofer – that’s just being lazy. If you want to observe Shabbos, which counts as keeping kol ha’Torah, then you need “la’asos osam,” to do something to mark the day as significant. The “shamor” has to have a “zachor” that goes along with it. It’s a pretty remarkable statement – you have someone that technically did nothing wrong, but is still included in an arur. (See haKsav v’haKabbalah for a different pshat that also stresses the “la’asos osam” ending of the pasuk.)
Ramban's pshat is quoted by the M”B l’halacha, though if you are not up to Hil Y”K yet you may not have seen it. The M”B writes that there is a chiyuv tochacha to try to dissuade people from doing aveiros, including meting out punishment if necessary. Who can do that? Ramban writes that the “arur” of “asher lo yakim” applies to the king or his officers who have the power to be "makim" and force people to change their behavior. An individual who has no authority and power has no obligation to coerce ba’alei aveira to get back on track. Here too, says the M"B, coercion should be undertaken by beis din, not any individual.
Anyway, I can't stop listening to this: