It concerns Father Francis Carney's leaving the Jesuits to pursue guerilla warfare in the jungles of Honduras, never to be heard from again.
After a price had been put on his head by the Honduran Gov't, and his safety assured he crept back into Honduras to become part of the solution, and before doing so, wrote to his family in Chicago bidding them goodbye, and telling them he could not stand to live as they lived any longer.
As Fr. Malachi points out, if he couldn't keep to the strictures issued the Pope's Men, he certainly was at least honest enough to not want to bring further disrepute on the Society, so he turned in his badge. After I finished reading that passage, I was left with an ineffable sense of sadness for Fr. Carney, and most of all for the Society.