How much of MLK's mention of "soul" is in reality a reference to anti-intellectualism in the Church?

"I have watched many churches commit themselves to a completely otherworldly religion which makes a strange, unbiblical distinction between between body and soul, between the sacred and the secular. We are moving toward the close of the 20th Century with a religious community largely adjusted to the status quo- a taillight behind other community agencies rather then a headlight leading men to higher levels of justice."

Martin Luther King, Jr.