I know what you mean about looking you in the face. When my stbx left me back in '03, he was a bit like that. When he did look at me, he was guilt stricken. I changed the locks. It meant he had to see me to get his stuff, but it also meant that we didn't have petty arguments over things disappearing. He got mad, but how could he blame me for changing the locks when he moved out.
It's gut wrenching to even make the decision to separate from someone you love and have built a life with. It's even harder to actually make the break. Having been on both sides, my heart goes out to both of you.
Why would your H take the bus? Maybe one of "his friends" gave him a ride. Don't worry about them either. If they're petty and immature, you don't want to share them. If they're conflicted, they'll come around. Since they're the ones who didn't show up at the party, it reflects much less on you than it does on them.