Maybe I could grow out my beard, wear different clothes, and try again in a month. He'll probably have forgotten me.
I still have a lot of anger and disappointment about it, and I'm just going to have to give those feelings some space. They'll take some time to dissipate, which sucks.
I went back to the Mountain View company today, for one interview with a guy who asked for some easy-for-me coding, and to talk to the director about what I'd actually be working on. Fortunately, he has a vision for the role, even if his minions have no idea what I'd be doing. So I'm a bit wary, but it might work out.