Huh. Comparing guitar practice recordings, I am now confidently able to say I've gotten better at playing "Blackbird" in the meantime.
For comparison, here's the first attempt about a week ago.
All right, I'm still slipping up in little places, my picking is quite uneven... but I'm able to recover from mistakes inline, and my right hand isn't going "AAH PANIC WHERE TO GO NOW?" any more.
I haz win. Also, I haz learned new barre chord last night, except I do not know what it's called. I'm sure I'll find its name at some point, but for now, I will think of it as the thing that enables me to play "Rodeo Clowns."