I don't know who wrote the following essay but it was most likely written by a CLC man some time after 1968.
Quotes of note:
"While relations were suspended with the LC-MS, no direct action was taken to withdraw from the SC. But there were indications in the suspension resolution that this was intended in the near future.""The ELS position of long standing has been this, very briefly, that when a person or church body with whom we are in fellowship causes divisions and offenses contrary to the doctrine which we have learned, we mark them immediately, then admonish, and if this proves fruitless, avoid them."