I just ran my second session of HotDQ and I've run into a problem. After almost wiping to find Leosin, the party absolutely furious that he didn't want to go back with them to the point where they cursed him to his fate and walked out.
They now want nothing to do with him, and will probably end up attacking him if he bad-mouths them or shows up and puts on the mystery act. How crucial is he to the rest of the story? I've heard conflicting messages from this remix blog that says he honestly isn't that important, and people on Reddit who say he's one of the more important NPCs to the story, so I'm not sure what to believe.
I'm looking for suggestions on where to go from here before our next session. I've decided I probably need to read through the entire module (I've been attempting to go through it episode by episode), but I'm not sure how to best remedy/work with their attitude towards him if he is going to be continuously showing up.