The technique that McCord uses when he allows each line to run into the next is called enjambment. Enjambment is when the imagery is creating vivid pictures.
Enjambment is a literary device commonly found in poetry. It refers to the use of incomplete syntax at the end of a line. The idea of each verse runs over from one line to the next without punctuation. This technique can be used alongside rhymed verse.
"Who knows but this surrendered face were undefeated still." If something surrenders, it implies it has been defeated. "Heavenly hurt" does seem to be ironic too though. Hope this helped.
