Lovely job !
That sort of situation can lead to irrepressible cycling smugness which can last a week. Or longer, if you put the film on YouTube.
I've managed to help the poor darlings sort themselves out in situations like that a few times.
They are so pitiful and helpless in their little tin boxes when they can't move forwards quickly enough (bless their little cotton socks). You can't help but show a bit of sympathy.
Not having a "stake" in the aggression and frustration these poor benighted drivers are experiencing, has made it easier for me to suggest a bit of give & take, a few adjustments back & forth, here and there, and get the traffic flowing again. Until the next wombat who can't hold back or find reverse blocks it up again, that is.