No, they haven't won me over. I think D.C. applied the rules as he saw fit and, having read the rules carefully myself I accept that they give room for manoeuvre where the safeguarding of young children are concerned.
To those of us who, "listened to understand" rather than, "listened to reply" to D.C.'s audience with the press, the answer regarding the articles that were written as though they were still in London was clear, he wanted to spare his elderly parents and his sister's family from the attention of the press. In short he admitted, albeit in a roundabout way, that he'd deliberately misled the public in order to protect his family. He didn't apologise for it because he felt it was the right thing to do under the circumstances.
As far as the article M.W. wrote, he quite rightly said he couldn't speak for his wife, she' s a professional writer, and nor should we be asking him to, it's 2020 not 1920!
I do believe that D.C.'s accounts of his actual movements and level of contact with other people during his escapade are true as, given the current witch hunt, I'm comfortable in my certainty that, should there be irrefutable evidence to the contrary, it would have been shouted from the rooftops and if any comes to light, it will be. So far, however, we are being thrown excuses without backup. Her sister was in London, (could be any number of reasons why she couldn't, wouldn't, they didn't want to ask, nobody's bloody business but theirs). Could have got a nanny in (expressly against "the rules" at the time, no question over that). Child in car with infected parent, (child already, given only 4-years-old, already been in close proximity to infected parent!) and on and on.
Every aspect of this I have given careful consideration and weighed up in my own mind and my feelings are: Justified in going to Durham, would have done same in his shoes. Articles? Hmm, can't comment as don't know what pressure M. W. was under to turn in copy and, if locked down, what else had she to write about and could she, in all honesty, open up her PIL to the baying mob in their doorstep? Too many unknowns to even begin to play judge and jury. Trip to Barnard Castle? Don't believe his excuses, they sound stupid and he's not stupid but there's no evidence that he broke social distancing guidelines so, man up, 'fess up, apologise, pay your fine like everyone else.