I lived many places: those that salt, use calcium chloride, those who sand, spray brine, and those who grit the roads.
Every spring brings a new set of challenges-- between crap on the road and people looking even less than usual for motorcycles.
Corners, the bottom of hills, intersections, interchanges all must be taken with care.
Sometimes holding your line is the best course of action, sometimes heading to the shoulder is the best course of action, but in your case, you couldn't possibly have guessed he was suddenly going to hook up and high side.
I am sure I would have ridden as if he were going to continue his slide and evade him, just as you did.
Actually, aside from losing your bike and your trip, you came out beautifully.
"So what makes this protest different is that you're set to die, Bobby?"
--May well come to that.
"You start a hunger strike to protest for what you believe in. You don't start already determined to die or am I missing somethin' here?"
-- It's in their hands. Our message is clear. They're seeing our determination.