I was once given a heter by a prominent respectable posek to take a cab home from the hospital on shabbos with a patient who had difficulty walking. (He only told me after we had already walked home, so it wasn’t a psak l’ma’seh for that occurrence, but he said it would have been muttar.)
A choleh often gets a heter for violating a shvus, and that should never be applied to a non-choleh situation.