I do wonder what is going on with the DUP. When the deal was first mooted, seasoned NI watchers said they were impossible to deal with - just when you thought that you had a deal, they would say, Columbo style, as they went out the door 'oh just one more thing...'. One suggestion is that they are affronted by criticism from some more liberal Tory back benchers about their antedeluvium attitudes and beliefs. They do have a deep seated certainty that they are right and brook no criticism. I heard an excerpt from a speech by a DUP MP in which he talked about woman being fashioned from Adam's rib - he believes it is the literal truth.
. He said this in the House of Commons 