I won't go into the trip report much, since we didn't even reach any difficult sections. Will edit this another time when we actually summit. But allow me to tell you the story. It was windy on Sentinel Pass. We took a break at the rock shelter and cooked some food to warm up and fuel us before hiking to get to the summit, then started up the rock band. Stay left for less scree on the ascent of this section. 5 minutes up, the storm rolled in. I still had not purchased gloves yet after Mount Tyrwhitt, and was regrettably very cold and numb in my hands. Freezing rain pelted down on us and we were soaked. But this is where the "Oh crap" moment came in -- not with the weather, but with actual bowel problems. My fiancée must have eaten something weird the night before, because he had to go multiple times that day.  But he ended up having to defecate on the mountain, and after wiping and covering up the remnants with a rock to allow it to biodegrade, we started up the rock band again.
K: "Oh crap, why does it feel so wet?" 
D: "Uh... did you wipe properly?" 
K: "I don't know... it was hard, people were coming up already, I tried to just get it done as fast as possible."
This banter went on for another 15 minutes as we ascended and as I laughed my face off, and we decided it is better to not risk a diaper rash in case he had not wiped cleanly. It was hard to tell given how soaked we were by the freezing rain.