Besides his overall dickishness, here is what stood out to me from the transcript (thanks for the link!):
Of course the statement itself ("love for one another") is incontrovertible, but the whole question concerns the status of particular commandments and principles in relation to the great and ultimate idea of love.
I agree this is the fundamental question.
The problem for me is that Hancock appears to believe that there are instances where "particular commandments and principles" can compete with, or even trump, the "great and ultimate idea of love."
My reading of the New Testament is that this is precisely the idea that Jesus spent most of his ministry fighting against--that there were instances where religious orthodoxy could trump the love we should have for our neighbor.
From Jesus's point of view, it seems that the "status of particular commandments and principles in relation to the great and ultimate idea of love" is that at any point where the two intersect, the latter must always trump the former.
No exceptions.
Jesus didn't excoriate the commandment breakers, but the commandment keepers--at least when such commandment keeping was done at the expense of the fundamental law of love.