Thanks for the kind words, folks.
The good news is that my two cousins buried the hatchet (and not in each other's skulls) not long after I left last night. The bad news is that while the doctors were performing what was supposed to be relatively simple stomach surgery on my uncle, they punctured his esophagus. Their mistake has necessitated a much more involved procedure to fix it. After 5 hours of surgery today, they did not locate the perforation but [did something medical that I don't understand] to fix the situation. Last I heard my uncle is in stable condition, but is going to be in the ICU for eight to ten days.
The last two days have been much more difficult than I anticipated but it looks like things will calm down for a bit. All we can do now is wait and pray (or not).