Took that whole haiku sequence totally differently! I interpreted the poem to refer to his reflection being captured, sucked in, then ejected -- a metaphor for the "self" he hates, now a corpse.
"Sit down along the river bank and wait, sooner or later you will see the corpse of your enemy pass"
His enemy is his own shame. Shame of what, I'm unsure...
That was my interpretation of @theironfelix's poem. Like all art, its meaning reflects more on the observer than the artist.
