Captain Bethune disassociated himself from Sea Shepherd by posting an open letter on his Facebook page on 4 October 2010, condemning the organisation and its leader Paul Watson as "dishonest" and "morally bankrupt".
Bethune trak sig ud af Sea Shepherd ved at poste et åbent brev på Facebook den 4. oktober 2010, hvor han fordømte organisationen og dens leder, Paul Watson, som han kaldte "uærlig" og skrev at han var "gået moralsk konkurs (morally bankrupt)".